To demonstrate the removal of heat during evaporation.

If you place a cup of water filled to the brim in front of a duck that is movably suspended in a frame and moisten its head, the duck will tilt its head into the glass.

As long as it can dip its beak in and moisten it, it will “drink”.

This graphic, sealed exhibit, containing a pack of cigarettes and cigarette butts submerged in gooey tar, represents the amount of carcinogenic liquid a half-pack-a-day smoker put into his/her lungs over the course of a year.

Direct current: 1 / 10 / 100 / 100 mA / 1 A / 10 A, accuracy 2% of full scale

Alternating current: 10 / 100 mA / 1 A / 10 A, accuracy 3% of full scale

DC voltage drop: 250 mV in all ranges

AC voltage drop: 5V (10 mA), 500 mV (100 mA), 50 mV (1 A / 10 A)

Display: moving coil instrument with mirror scale

Analogue multimeter with mirror scale, tip-mounted moving coil measuring mechanism and central measuring range rotary switch.

For measuring current, voltage and resistance

20 measuring ranges

Continuity test with acoustic signal

Includes accessories: case, test leads, batteries and operating instructions.

Voltage DC: 3/15/60/150/600 V; ±3.0%

Voltage AC: 15/60/150/600 V; ±4.0%

Current DC: 100 µA/10 mA/500 mA/10 A; ±3.0%

Current AC: 10 mA/500 mA/10 A; ±4.0%

Resistance: 200 Ohm/2/20/200 kOhm/2 MOhm; ±5.0%

Power supply: 3 x 1.5 V AAA batteries

Display: 75 mm mirror scale

Safety: EN 61010-1; CAT II 600 V

Dimensions: 110 x 175 x 45 mm

Weight: 315 g

The Astro Laser Set presents massively extended version of our best-selling product – Ray Optics Demonstration Set, but focused on area of astronomy. This newest teaching equipment is intended and applicable for almost all age groups - from 8 year-old children to adults. Its goal is to acquire basic astronomical knowledge in an interactive way. The set improves the quality of teaching and offers the new possibilities in this constantly evolving field of science.

The Astro Laser Set uses two different independent sources of light (white LED, red and green laser light), which represent the Sun or the stars and are visible even in normal daylight or under artificial lighting in the interior. The kit contains plastic elements that present cosmic bodies (Earth, Moon, exoplanet ...) and optical elements (lenses, mirrors, etc.). The working drawings have exactly marked positions where optical elements, light sources and other objects are supposed to be placed during each task.

All topics and tasks can be conducted by a lecturer of the class in the field of astronomy, physics, optics, mathematics, geometry, etc. Some optical elements from the set (lens, scattering, semicircle, mirrors) can be used to explain and represent other optical phenomena (refraction of light, light reflection, etc.). Every element is taped with magnetized foil at the bottom, allowing intuitive attachment to a magnetic board.

Astro Laser Set contains:

Instruction manual – printed

Video presentations can be found on our youtube channel

Light sources – white LED, red and green laser raybox

Optical models (15 pcs) – 4 different lenses, 8 pieces of different of mirrors, equilateral prism

Astro objects – Earth, Moon, Albedo, Exoplanet, Earth’s atmosphere, bottom pads for the Moon

Example sheets (14 pcs) for very simple and quick preparation of demonstration.

The whole set is stored in a lightweight plastic case allowing comfortable transport. The demonstration is done quickly if the desired objects are located on assigned positions on the sheets:

1 – View Of The Sky

2 – Electromagnetic Radiation Spectrum

3 – Phases Of The Moon

4 – Eclipses

5 – Albedo

6 – Galilei Telescope

7 – Kepler Telescope

8 – Spherical Aberration And Its Correction

9 – Newton Telescope

10 – Cassegrain Telescope

11 – Hubble and James Webb Space Telescope

12 – Radio Telescope

13 – Searching For Exoplanets By Eclipsing Method

14 – Variable Stars

Borosilicate glass, Boro 3.3

h=95mm, d=70mm

Boro 3.3 glass, h=125mm, bottom d=60mm

Ready-to-use solution in 50ml glass bottles with rubber balloon pipettes.

For glucose determination, 10 x 50 ml.

To demonstrate how a bimetal thermometer works;

adheres to window panes, so the outside temperature can be easily read from the inside,

the bimetal spiral is clearly visible through the transparent back plate;

measuring range: -40 ... +50 °C,

diameter of the bimetal spiral: 20 mm,

disk diameter: 150 mm

For density experiments;

Metal cylinder with hook,

Material: Al / Fe / Cu / Pb

Weight: 200 g each, diameter = 25 mm each

To determine the relationship between pressure and volume of a gas at a constant temperature (Boyle-Mariotte law);

Compact device, consisting of a pressure gauge with a practical, clear scale, attached gas syringe made of impact-resistant plastic, well-sealed yet smooth-running piston with a robust handle, clear, easy-to-read printed scale

Syringe filling volume: 120 ml

Pressure gauge range: -1000 ... +3000 hPa

Dimensions: approx. 290 x 63 x 42 mm

Weight: approx. 182 g

Bulb socket for E10 bulbs. Connection sockets for 4mm pin plugs.

Cylindrical body to demonstrate the temperature dependence of buoyancy.

If the body is placed in a vessel filled with cold (approx. 10 °C) water, the body will float.

If the body is placed in a vessel filled with hot (ca. 90 °C) water, the body sinks to the bottom.

At a temperature of about 50 °C, the body begins to rise to the surface in the vessel.

Length 75cm

Connecting wires with magnetic tips make it easy to build a circuit. The batteries and bulb socket shown in the picture are not included. The set consists of 10 connecting wires.

to investigate capillarity, due to the adhesive force, water rises to different heights in pipes with different inner diameters;

three glass capillary tubes, each 120 mm long

Inner diameter: 0.6/0.8/1.0 mm

Weight: approx. 15 g

For a quick and very clear explanation of subtractive color mixing without any additional aids;

three plastic discs coated in the colors:

yellow, magenta (purple), cyan (blue-green);

diameter: 195 mm each

Material: composite nylon

60 linear meters of cord, on a roll with side clamping grooves

Dimensions of the roll: D=22 mm, L=43 mm

Weight: approx. 7 g

Material samples for the detection of electrically conductive and non-conductive materials;

Set consisting of the following materials:

Aluminum

Copper

Cotton

Wood

Plastic

Carbon

Silicone rubber

Length: 65 mm each

Weight: approx. 7 g

Material samples for the detection of electrically conductive and non-conductive materials (conductivity);

Set consisting of the following materials:

Aluminum

Copper

Cotton

Wood

Carbon

Rubber

Glass

Length: approx. 150 mm each

Weight: approx. 82 g

Set consisting of cables with 4mm banana plugs of the following lengths and colors:

1 x 75 cm red, 1 x 75 cm blue,

1 x 50 cm red, 1 x 50 cm blue,

2 x 25 cm black.

Also you can choose other color combination.

To investigate the dependence of electrical resistance on material, length, cross-section and temperature, to determine the specific resistance;

Resistance wire wound on a coil body

Material: NiCr

Diameter: 0.2 mm

Wire length: 30 m

Mass: approx. 9 g

Concave and convex mirrors in black plastic frame on a stem;

Focal length: ± 200 mm;

Mirror diameter: 100 mm;

Stem: L=90 mm, D=10 mm;

Frame diameter: 120 mm;

Distance from mirror center to stem end: 150 mm

0,12mm2, 0,14Ω/m, 50m

Edges: 100 mm

For determining the density of various materials by weighing;

Material: Al / Cu / Fe / Pb / Zn / Wood, set of 6 pieces

Dimensions: 10x10x10 mm each

By filling the cuvette - liquid lens with different liquids and pointing the laser(beams) at the "liquid" lens, it is possible to demonstrate the refractive indices of different liquids.

Cuvette dimensions 105x50x20mm.

On the back of the cuvette there are magnets for fixing the cuvette vertically.

The set contains 2 cylindrical bodies and two 100ml measuring cylinders.

If the body is placed in a measuring cylinder filled with cold (approx. 10 °C) water, the body floats.

If the body is placed in a measuring cylinder filled with hot (ca. 90 °C) water, the body sinks to the bottom.

At a temperature of about 50 °C, the body begins to rise to the surface.

Sensor - CMOS 1/2.9 inch

Pixels - 1920 x 1060 pixels, 2.0 Mpix

Scan mode - Progressive, rolling shutter

Pixel size - 2.8 μm x 2.8 μm

Filter - RGB

Mount - C-mount

Max fps - Up to 30 frames per second (1920x 1080 pixels)

(Frame rates have been determined at optimal conditions)

ADC - 12 bits

Color depth - 24 bits

Sensitivity - 0.51 V/lux-sec @ 550 nm

Exposure - Automatic or manual, from 1 ms to 2 s

White balance - Automatic/manual

Dynamic range - 72 db

Data interface - USB 2.0 at 480 Mb/s

Operation - 0 – 60° C, 10-85 % humidity

Supplied with

0.45x objective with C-mount, USB 2.0 cable, 30 and 30.5 mm adapters for stereo microscopes, 76 x 24 mm calibration slide, USB stick with ImageFocus Plus software, carton box

Software

Windows 10 and higher (32 and 64 bit configurations) and Mac OS

The AM3111 digital microscope is an economical pick that provides smooth imaging and balanced color performance, making it suitable for a variety of applications, such as simple industrial inspections, educational use, or personal hobbies.

Smooth Imaging: The CMOS image sensor transmits smooth images at up to 60 fps with 640 x 480 resolution.
Adjustable Magnification: The adjustable magnification ranges from 20x ~ 50x for a broad view to over 200x for detailed close-ups, easily controlled with the focus knob.

For monitoring X-rays, beta and gamma rays, with alarm to protect people from radiation;

TFT color screen for easy operation, acoustic and visual alarms, alarm thresholds can be set;

Measures dose rates in real time and records total doses

Calibration function

Adjustable alarm thresholds

Display of the current total dose

Time-controlled measurement: 0 - 999 h

Alarm when limit values ​​are exceeded

Saves the recordings of the last 10 measurements

Display of the battery status

Warning in case of sensor errors

Included in delivery:

Carrying case, data cable, wrist strap and manual

Display: TFT 2.0 color screen

Sensor: G-M counter

Detected rays: X-ray, beta and gamma

Range: 0.05 µSv ... 50 mSv

Accuracy: -17% ... + 25%

Alarm response time: <10 sec.

Alarm modes: acoustic and visual alarm

Battery: 3.7 V / 1800 mAh

Battery life: 20 days (continuous measurement, sound off)

Weight: 127 g

Dimensions: 120 x 65 x 25 mm

This completely wireless system simplifies experiment setup and allows basic experiments to be conducted with or without the track.

Specifications

• Position resolution: 0.25 mm, reported by default at 1 mm steps
• Force range: ±50 N
• Accelerometer range: ±160 m/s2
• Track length: 2.2 m

E27 lamp holder with base, switch, fuse and power cord.

Together with an electricity meter, it allows you to study the power consumption of different E27-base lamps (e.g. incandescent, energy-saving or compact fluorescent and LED lamps).

Using a lux meter or Vernier light sensor, it allows you to study the relationship between light intensity and energy consumption.

Class 2 teaching laser for use as a high intensity light source

especially for experiments on interference, diffraction and holography as well as interferometry;

Laser diode in a “compact” magnetic module;

Wavelength: 635 nm; optical output power: ≤ 1 mW;

for tripod mounting, the holder for “compact” modules DS617-1H is required;

Operating voltage: 3 V (plug-in power supply included)

Housing dimensions: 84 x 84 x 39 mm

Working model of an electric motor for student experiments. By assembling this model, students become familiar with the components and structure of a motor. The simplicity of the model enables a transparent representation of the function of the motor. The permanent magnet can be replaced by an electromagnet, which allows the motor to be operated with both direct and alternating current. Of course, operation as a main or shunt motor is also possible! The drive shaft of the motor is equipped with a pulley.

The tools required to assemble the working model are included in the scope of delivery!

Voltage supply in DC operation: 1.5 ... 5 V

Voltage supply in AC operation: 6 ... 9 V

Dimensions (in plastic box): 133 x 104 x 42 mm

Dimensions (finished model): 133 x 104 x 100 mm

Mass: approx. 277 g

Electric motor 2-6V on base with rubber feet and 4 mm safety banana sockets. Can also be used as a electric generator. Produces 1.5 V with 90 mA at approx. 2500 rpm.

Electronic scale that can be easily stored - several EFS series scales can be safely stacked on top of each other, saving storage space.

Weighing plate dimensions 134x127mm, material - plastic

Max. weighing object 620g

Readability and repeatability 0.1g, linearity 0.3g

Power supply 4xAA batteries

Weight 450g, dimensions 145x205x46.5mm

Set of electronic scales (5 pcs), which can be easily stored - they can be safely stacked on top of each other to save storage space.

Weighing plate dimensions 130x125x10mm, material - plastic

Max. weighing object 620g

Readability and repeatability 0.1g, linearity 0.3g

Power supply 4xAA batteries

Weight 430g, dimensions 145x205x46.5mm

Metal net bell with hook, for shielding electrical fields.

Diameter: 240 mm, height: 300 mm

A ferromagnetic liquid is contained within a closed glass container. The included neodymium magnets can be used to influence the ferromagnetic liquid, thereby creating various shapes.

Fiber optic light that changes the color of the light. Powered by 3xAA batteries.

This loose foot and ankle skeleton comes mounted with elastic bungy for a flexible effect. The foot skeleton includes portions of the tibia and fibula. Flexible throughout for a more realistic anatomy model of the human foot.

Unfortunately it is not possible to specify left or right version, you will randomly receive a left or right sided model.

Color-coated weight piece with two hooks for hanging together,

with screen-printed, highly visible mass information, ideal for demonstration experiments

Tolerance: ±1%, powder-coated yellow

Hooked weight with robust hook and eyelet for hanging together;

Nickel-plated metal weight, with stamped weight number,

Hook for rods up to 10 mm diam, eyelet on the bottom for hanging several weights together

D = 25 mm, L (total) = approx. 70 mm

Running times:

30 sec +-10%

1 min +-10%

3 min +-10%

5 min +-10%

10 min +-10%

In plastic box with handle.

This shoulder joint model consists of the upper half of the humerus, as well as the clavicle and scapula. Besides showing the musculature of the rotator cuff, the shoulder joint model also shows the origin and insertion points of the shoulder muscles highlighted in color (origin = red, insertion points = blue). The following muscles of the shoulder can be depicted and even detached for a clearer understanding of the shoulder joint:

• M. subscapularis
• M. supraspinatus
• M. infraspinatus
• M. teres minor

Upon detaching the individual muscles, all movements of the shoulder joint can be carried out, namely:

• Abduction
• Adduction
• Internal rotation
• External rotation
• Raising the arms to the front of the body
• Raising the arms to the back of the body
• Raising the arms above the horizontal plane and “making circles with the arms”

To explain real and virtual images on the mirror;

the virtual image of the "F" is clearly visible on a semi-transparent mirror.

If you push the reversed "F" into this place, you can clearly prove that the object and the image are symmetrical to each other.

Semi-transparent mirror, 135 x 70 mm, in 2 brackets, two objects with "F", one of them mirror-inverted.

Weight: approx. 114 g

For an impressive demonstration of energy conservation and momentum;

4 rubber balls of different sizes, one on top of the other, arranged on a plastic axle.

The bottom rubber ball is firmly connected to the axle, while the next two rubber balls can move on the axle, but cannot leave it.

Only the top, smallest rubber ball can move completely on the axle.

Ball diameter: 48/37/24/21 mm (delivered with two small replacement balls)

If you drop the impulse cannon from a certain height onto a solid floor, after impact the top, small rubber ball flies upwards at a multiple of the final falling speed v0 and can reach enormous heights.

If you mark the maximum heights (hM) on a wall, you can work out a connection to different starting heights (hA).

For observing interference phenomena by placing and moving two transparent plastic plates with printed concentric circles and parallel lines on top of each other (can also be used on an overhead projector); Circle diameter: 173 mm Plate dimensions: 297 x 210 mm

For experiments on magnetism and electromagnetism (long-distance effect of a magnet, magnetic influence, magnetic force of a current-carrying coil).

Iron nails, galvanized, packed in a tin with a lid

Length of nails: approx. 20 mm

Filling quantity: approx. 150 g

Dimensions (tin): D=77 mm, H=36 mm

Weight (total): approx. 166 g

To investigate the dependence of electrical resistance on material, length, cross-section and temperature, to determine the specific resistance;

Conductor wire wound on a coil body

Material: Fe

Diameter: 0.2 mm

Wire length: 30 m

Mass: approx. 15 g

For determining the specific heat of water, the heat output and current, the electrical heat equivalent, the water value of a vessel, the heat capacities of liquid and solid substances and for converting electrical energy into thermal energy.

Consisting of 2 aluminum cups, an insulated container in between, transparent lid with immersion heater cascade 2 / 4 / 6 Ohm with four 4mm safety sockets, silicone stopper for inserting a thermometer and a simple stirrer

Supply voltage: 6 V

Filling volume: approx. 150 and 700 ml

Dimensions: D = approx. 100 (105) mm, H = approx. 120 mm (without stirrer)

Mass: approx. 228 g

Two devices included in set.

A base plate with a motor, to which one of the eight supplied colored disks can be connected. When starting the electric motor, the colors of the discs merge into one. Required external DC supply voltage 2...6V.

Projector with three primary color light sources. By switching different light bulbs on and off, you can observe the colors produced and the colors produced when they join on a screen (eg white paper). Required external supply voltage 6V.

The standard in the laboratory, ideal for a wide range of applications for Industry 4.0.

Weighing capacity [Max] 2000 g

Readability [d] 0,1 g

Units kg, g, gn, dwt, tl (Tw), tl (HK), ozt, tl (Singap, Malays), ct, mo, lb, oz, ffa, m

Linearity ± 0,2 g

Reproducibility 0,1 g

Stabilization time 3 s

Interfaces RS-232 (optional), Bluetooth (optional), Ethernet (optional), USB-Device (optional), KUP, WiFi (optional)

Adjustment options Adjusting with external weight

Recommended adjusting weight 2 kg (M1)

Ambient temperature -10 °C – 40 °C

Dimensions weighing surface (W×D) 130×130 mm

Material housing plastic

Dimension housing (W×D×H) 163×245×65 mm

Material weighing plate stainless steel

Net weight approx. 1,4 kg

Lamp 12 V/30 W with movable condenser for adjusting the convergence of the light beam and two external mirrors for examining the color mixture. With slots for inserting filters, diaphragms, slits, etc., heat-resistant housing.

Dimensions: 160 x 80 x 55 mm

Weight: 320 g

Suitable to replace a standard E10 screw-base flashlight bulb. Introduce students to Light Emitting Diode (LED) technology and its uses in addition to incandescent bulbs. Voltage 2.5...6V, max power 0.12W. Dimensions: Ø11 x 28mm

For cleaning, polishing and protecting optical glass components

30 sheets, each 115 x 60 m

Four colored round magnets on a common rod.

Very bright light source for demonstrating the image size and width ratios of the pinhole camera;

super bright F-shaped LEDs in a plastic housing, battery operated, with on/off switch

Optical axis: 58 mm

Dimensions: 60 x 30 x 127 mm (with tab)

Power supply: 2 AAA batteries (included)

Weight: approx. 109 g

Switchable light from white LED and red laser. Both light sources are certified with the lowest protection class of their kind, the device is assigned to risk group RG0 (“free group”) according to DIN EN 62471 and laser protection class I according to DIN EN 60825.

For the quick assembly of various compact "mass packages";

Disc weight set with plate, consisting of:

1 x plate for slotted weights, 10 g, SE

2 x slotted weight 5 g, SE

3 x slotted weight 20 g, SE

3 x slotted weight 50 g, SE

2 x slotted weight 10 g, SE

Material: nickel-plated steel

Tolerance: ±1%

Dimensions: 113 x 55 x 35 mm

Weight: 250 g

A paste-like magnetic material in a can that can be "attracted" to it with the included neodymium magnet.

With three clearly structured scales: dm and cm graduations as well as mm graduations on the back;

Rectangular tube profile made of aluminum 30x15 mm, powder-coated

3 metal cylinders of equal mass for determining specific heat capacity;

Hole for thread suspension;

Material: Pb/Cu/Fe;

Weight: 200 g each

Multimeter for measuring voltage and current, DC and AC, can also be used as a galvanometer. As an ideal student multimeter, it has two double scales. 

All of this makes this device unique:

Electronic overload protection in all measuring ranges, with control LED display (no more fuses!)

Large, robust design with holster

Easy to read thanks to tilted position

Transparent base with recessed grip for holding with one hand

1 mV final value range for measuring thermal and induction voltages without a preamplifier

All measuring ranges (even low currents!) are available in AC

Unusually good frequency response: typically -1.5 db at 20 kHz, so measurements on all types of resonant circuits are also possible directly

Large, easy-to-read mirror scale with clear print

Extremely accurate, typically 1.5%

Large, robust selector switch

10 A range with its own input socket

Center zero point can be selected by switch position

Technical data:

AC and DC voltage ranges: 1, 100, 300 mV, 1, 3, 10, 30 V

AC current ranges and DC: 100 µA, 10, 30, 100, 300 mA, 1, 10 A

Internal resistance: 100 kOhm/V

Selector switch: DC, AC, battery control, pointer center position

Scale arc length: approx. 90 mm

Power supply: 4 x 1.5 V Mignon batteries (included)

Dimensions: approx. 200 x 140 x 110 mm

Weight: approx. 637 g

Length: 20 m

Diameter: 1 mm

Load capacity: 28 kg

Comes with various lenses and other equipment. The LED light is powered by batteries.

25ml, in a glass bottle with a pipette

For experiments on reflection or for creating images on a flat mirror;

high-quality, flat mirror with ground edges

Material: glass, coated

Dimensions: 75 x 50 x 3 mm

Weight: approx. 28 g

For experiments on reflection on a flat mirror (angle of incidence, angle of reflection) and on creating images on a flat mirror;

Flat mirror on a metal block

Material: plastic film, coated

Dimensions: 68 x 13 x 12 mm

Weight: approx. 12 g

Consists of two wooden boards 29 x 21 cm, adjustable screws for setting the compressive tension.

Ball D=60 mm, for dynamics and momentum conservation

Made of plastic, dimensions 37x43x12mm, weight 6g. Equipped with a hanging loop.

Made in Germany

The SL-ZW1 is a polarized USB powered gooseneck light with the ability for the polarization to be adjusted by a simple rotation on the accessory itself. To take advantage of the polarizing light, the accessory is ideally suited to work with Dino-Lite models that have the polarization filter.

In a ventilated sheet steel housing with on/off switch and power cable, colored 4 mm safety connection sockets for DC voltage, continuously adjustable output voltage, stabilized and smoothed, overheating and short-circuit protection, moving coil voltmeter. All outputs galvanically isolated from the mains.

Approved for student experiments in accordance with the current directive on safety in teaching (RiSU). CE mark.

For examining the refractive index of liquids;

Equilateral prism 60°;

made of acrylic glass plates;

with filling opening and stopper;

Base length: 60 mm; Height: 60 mm

Equipment set consists of individual components and can be combined excellently with other mechanical experiment materials. With just the components of this sturdy red case, you can carry out experiments with

- Loose pulley

- Fixed pulley

- Pulley block.

The two included holding frames, each with two hooks, make it possible to hold all four pulleys with a diameter of 100 mm. This gives you various options for experimenting with the pulleys.

In a sturdy transport and storage case (270 x 210 x 50 mm).

Red light source giving a beam with minimal divergence, housed in a compact and sturdy aluminium body. It is based on a 650 nm class II industrial laser module with a glass collimating lens. Fitted with a 10 cm stainless steel rod. A plug-in mains-adaptor power supply is included.

Laser protection class: II

Output power: 0.9 – 1 mW at 20° C

Wavelength 650 nm ± 5 nm

Spot size at 5 m distance: <8 mm diam.

Divergence <1 mrad

Plug-in power supply: Primary: 100 – 240 V, 50/60 Hz

Secondary: 6 V DC, 300 mA

Resistance 100 Ω / 10 W ±1% on base with rubber feet and 4 mm safety banana sockets.

Windings visible, on base with 4 mm connection sockets.

For experiments on swimming, floating and sinking in water, also in mechanics;

Material: wood, glass, steel, styrofoam

Diameter of the balls: approx. 20 mm each

Mass of the balls: approx. 37 g

Packed in a plastic container with lid

Dimensions: 55 x 55 x 40 mm

Mass: approx. 48 g

1 roll of wire, D=0.1 mm, L=30 m

1 roll of iron wire, D=0.2 mm, L=30 m

1 roll of copper wire, D=0.2 mm, L=30 m

1 roll of constantan wire, D=0.2 mm, L=30 m

1 roll of constantan wire, D=0.5 mm, L=15 m

1 box with lid

Sliding resistor in an open design so that the sliding slider on the resistance wire winding is clearly visible,

with 3 sockets for safety and normal laboratory cables with 4 mm plugs;

Resistance: 20 Ohm, load capacity: 2 A (also higher for a short time), voltage: max. 42 V,

Dimensions: approx. 150 x 65 x 40 mm

For experiments on photovoltaics and solar technology, for converting radiation energy (sunlight) directly into electrical energy;

Polycrystalline solar cell with sealed surface, two connection cables with crocodile clips, copper tracks on the back for soldering, poles marked

Technical data:

Voltage: 1.0 V

Current: 200 mA

Power: 0.2 W

Length of cables: approx. 20 cm each

Dimensions: 75 x 45 x 3 mm

Weight: 18 g

For Vernier spirometers SPR-BTA, GDX-SPR

For Vernier spirometers SPR-BTA, GDX-SPR

Cube-shaped stand for test tubes. Holes of different diameters on different sides:

4 places d=28mm

10 places d=17mm

12 places d=12mm

16 places d=11mm

Several test tube stands can be connected together to form a long test tube stand

Made of enameled thick wire.

Dimensions 130x116x55mm.

Openings 18mm.

Pair of wide field eyepieces WF10x/20 with rubber hoods.

Binocular head tilt 45°, left eyepiece diopter adjustable, eyepiece distance adjustable 55...75 mm.

Pair of objectives 1x and 3x. Magnifications 10x and 30x, field of view 10 / 5 mm.

Two coarse focus buttons.

Transparent and black/white object plate. Two object clips.

Transmitted and incident LED illumination. Transmitted and incident illumination can be used separately or simultaneously.

Built-in rechargeable 1,800 mAh battery and external charger.

Dimensions 25 x 18 x 11.5 cm, capacity 4 liters, stackable

Choice of natural, blue or red

RE-Wood is made of 100% recycled materials, PEFC certified, the material can be recycled again and again after disposal.

Packed in a cardboard box.

Dimensions 25 x 18 x 6 cm, capacity 1.5 liters, stackable

Choice of natural, blue or red

RE-Wood is made of 100% recycled materials, PEFC certified, the material can be recycled again and again after disposal.

Packed in a cardboard box.

Analogue hand-held measuring device for current (ammeter), especially suitable for student experiments thanks to electronic overload protection.

Technical data:

Measuring ranges DC and AC: 10, 30, 100, 300 mA, 1, 3, 10 A

Selector switch: DC, AC, battery check, off

Moving coil measuring mechanism with mirror scale, arc length: approx. 90 mm

Overload protection with diodes and LED display

Accuracy: 2% (DC), 3% (AC)

Own consumption: 100 mW (+ fuse)

Usable frequency range for AC: 15 Hz ... 20 kHz

Maximum permissible input voltage: 30 Veff

Power supply: 4 x AA batteries

(Battery life: approx. 3 years)

Dimensions: approx. 200 x 140 x 100 mm

Weight: approx. 630 g

Secured wide field eyepiece WF 10x/18 mm with fixed pointer

Monocular 45° inclined tube, 360° rotation. Tube length 160 mm

Nosepiece for 4 objectives. Ball-bearing mechanism and click-stops

Achromatic 4x N.A. 0.10, 10x N.A. 0.25 and S40x N.A. 0.65 DIN 35 mm parfocal objectives

The S40x objective is spring-mounted

Square stage 115 x 100 mm with 55 x 22 mm X-Y translation stage

Coaxial coarse and fine adjustments with 200 graduations. Precision 15 μm,

3 mm per rotation. Total travel approximately 15 mm. Friction adjustment

Friction of focus control can be adjusted

N.A. 1.25 condenser with iris diaphragm and filter holder

1 W LED illumination with intensity control, rechargeable batteries with external power

supply/charger

Paint with Antibacterial Protection Layer

Supplied with manual and dust cover in styrofoam case

Analogue hand-held voltage measuring device, especially suitable for student experiments thanks to electronic overload protection.

Technical data:

Measuring ranges DC and AC: 100, 300 mV, 1, 3, 10, 30 V

Selector switch: DC, AC, battery check, off

Moving coil measuring device with mirror scale

Arc length: approx. 90 mm

Overload protection with diodes

Accuracy: 2% (DC), 3% (AC)

Internal resistance: 100 kOhm/V

Usable frequency range for AC: 15 Hz ... 20 kHz

Maximum permissible input voltage: 30 Veff

Power supply: 4 x AA batteries (battery life: approx. 3 years)

Dimensions: approx. 200 x 140 x 100 mm

Weight: approx. 600 g

To demonstrate surface tension;

two flat acrylic glass panes with finger grip,

D=150 mm

Plastic. Openings 24mm. Dimensions 245x105x70mm.

For experiments on static, sliding and rolling friction,

by "unfolding" the block, the wood friction surface can be doubled;

Wooden block with four different surfaces: wood, rubber, leather and sandpaper, one end with a pull cord

Dimensions: 40x40x160 mm

Weight: approx. 200 g

For tests on static, sliding and rolling friction;

Painted wooden block with hook, a hook on the front for hanging a force gauge,

a central hole for stability tests

Dimensions: 160x80x40 mm, weight: approx. 350 g

Set includes: 440Hz tuning forks, tuning ring, stands, striking hammer.

The tuning ring allows you to change the frequency of one tuning fork from 440 hertz higher or lower, thus allowing you to demonstrate the beats.

Taking image quality to the next level, the 8-megapixel AM8117MZT digital microscope delivers high resolution and color fidelity for a natural-looking and detailed imaging experience. AM8117MZT includes a polarizer for reducing unwanted reflections as well as eFLC for maximizing lighting adjustability.

Short Description High Optical Resolution 8.0 Megapixel Enhanced Flexible LED Control (eFLC) Adjustable Polarizer Robust Metal Housing

The Dino-Lite AF4135ZTLE is part of Long Working Distance (LWD) series and connects to your device via USB. The AF4135ZTLE is Wireless-ready, but requires the (optional) WF-20 to make it a fully wireless solution.

In comparison, the AF4x35 series provides a similar working distance range but achieves higher magnifications compared to the AM4x15 series.

Short Description 1.3 Megapixel Edge sensor 10x~200x magnification Flexible LED Control (FLC) Polarizer Wireless-ready

DC voltage: 0.1 / 1 / 10 / 100 / 1000 V, accuracy 2% of full scale

AC voltage: 3 / 10 / 100 / 1000 V, accuracy 3% of full scale

Internal resistance DC: 2kΩ (0.1 V) to 20 MΩ (1000 V)

Internal resistance DC: 27kΩ (3 V) to 9 MΩ (1000 V)

Display: moving coil instrument with mirror scale

The wave demonstration device is attached to a table with a clamp or held in place by an assistant. The other end of the string coming from the device is fixed securely at a suitable length or held by another assistant. A DC voltage of 6V is applied to the device and by adjusting the rheostat, standing waves are achieved in the taut string.

Acrylic glass cuvette for demonstrating the capillary effect and determining the surface tension

Wedge angle: 10°, dimensions: 100x55x22 mm

Plastic compass for woodwork or drawing other circles with large radius.

The maximum inner diameter of the pencil holder is 9.5 mm. Min gap between grips 40mm, max gap between grips approx. 400mm. Total length 290mm.