Gift ideas
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”.
| Temperature, air pressure and humidity | |
| Diameter | 70/70 mm |
| Material | Solid oak |
| Assembling | Wall mounting |
| Dimensions | (L) 92 x (B) 38 x (H) 170 mm |
| Weight | 182 g |
With hanging loop, d=100mm
| Delivery contents | Penetration probe thermometer, battery, instruction manual |
| Measuring range temperature | -40...+200°C (-40...+392°F) |
| Material | Plastic |
| Power consumption | Batteries |
| Batteries included | yes |
| Batteries | 1 x LR44 1.5 V |
| Dimensions | (L) 20 x (B) 16 x (H) 205 mm |
| Weight | 29 g |
- Outside temperature and humidity via transmitter
- Room climate with indoor temperature and humidity
- Weather forecast with symbols, air pressure history
- Programmable alarm conditions, storm warning
- Radio clock with alarm and date, backlit display
Measuring time: 0.5 sec., display of the current temperature, maximum and minimum temperature during the measurement, hold and lock function, measuring range: -33...+220 °C, switchable °C/°F, accuracy ± 1.5 °C from 0 ... 50°C, otherwise ± 2.0°C or 2%, including battery CR 2032 button cell 68 x 37 x 18 mm, 75 g
Measuring range -50…+500°C (-58 °F…+932 °F)
Material: Plastic
Power consumption: Batteries
Batteries included
Batteries: 2 x AAA 1.5 V
Dimensions: (L) 39 x (B) 110 x (H) 144 mm
Weight: 144 g
High quality red light diode laser pointer.
Powered by 2xAAA batteries.
dimensions: 138 x 18mm
weight: 24g
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
The optical system consists of three lenses in a metal housing.
In a plastic box.
Plastic, 10, 25, 50, 100, 250, 500 and 1000ml
Wooden leaf and plant press for making herbarium.
Set includes 2 wooden panels and 6 cardboard plates. Dimensions 17 x 17 cm.
- For pool and pond
- Water temperature with highest and lowest values
- Display of indoor temperature and humidity
- Adjustable temperature alert
- Pool transmitter with 180 mm measuring depth and solar cells
- Radio-controlled clock with alarm and date
- Expandable by up to 7 temperature/humidity transmitters (optional)
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”.
| Temperature, air pressure and humidity | |
| Diameter | 70/70 mm |
| Material | Solid oak |
| Assembling | Wall mounting |
| Dimensions | (L) 92 x (B) 38 x (H) 170 mm |
| Weight | 182 g |
| Delivery contents | Penetration probe thermometer, battery, instruction manual |
| Measuring range temperature | -40...+200°C (-40...+392°F) |
| Material | Plastic |
| Power consumption | Batteries |
| Batteries included | yes |
| Batteries | 1 x LR44 1.5 V |
| Dimensions | (L) 20 x (B) 16 x (H) 205 mm |
| Weight | 29 g |
- Outside temperature and humidity via transmitter
- Room climate with indoor temperature and humidity
- Weather forecast with symbols, air pressure history
- Programmable alarm conditions, storm warning
- Radio clock with alarm and date, backlit display
Measuring time: 0.5 sec., display of the current temperature, maximum and minimum temperature during the measurement, hold and lock function, measuring range: -33...+220 °C, switchable °C/°F, accuracy ± 1.5 °C from 0 ... 50°C, otherwise ± 2.0°C or 2%, including battery CR 2032 button cell 68 x 37 x 18 mm, 75 g
Measuring range -50…+500°C (-58 °F…+932 °F)
Material: Plastic
Power consumption: Batteries
Batteries included
Batteries: 2 x AAA 1.5 V
Dimensions: (L) 39 x (B) 110 x (H) 144 mm
Weight: 144 g
High quality red light diode laser pointer.
Powered by 2xAAA batteries.
dimensions: 138 x 18mm
weight: 24g
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
The optical system consists of three lenses in a metal housing.
In a plastic box.
Plastic, 10, 25, 50, 100, 250, 500 and 1000ml
Wooden leaf and plant press for making herbarium.
Set includes 2 wooden panels and 6 cardboard plates. Dimensions 17 x 17 cm.
- For pool and pond
- Water temperature with highest and lowest values
- Display of indoor temperature and humidity
- Adjustable temperature alert
- Pool transmitter with 180 mm measuring depth and solar cells
- Radio-controlled clock with alarm and date
- Expandable by up to 7 temperature/humidity transmitters (optional)