This thermometer allows you to see the temperature by watching the balls sink and float in a beautiful sealed glass cylinder, as their densities are such that they rise or fall as the temperature changes. You can hang this one up as a beautiful display piece.
Measures between 16°C and 32°C
$24.95 $34.95This kit is an excellent beginner educational solar kit, teaching the basic solar power principals and also how it drives the motor and makes the movements of each model. This kit provides full set of plastic parts, solar panel and all necessary parts to build your own solar kit. Suitable for ages 10 and up.