Great for checking levels of 3.7V Lithium cells. This is essentially a visual/graphical voltmeter, and allows you to keep tabs on energy usage, and to keep an accurate schedule for when to replace your lithium batteries.
Heavy-duty microscope for high-school and college biology labs. Magnification of up to 1000X.
Explore the invisible and amazing power of magnets with 33 engaging experiments and games.
Easily assemble a working alarm motion detector!
Cool new Pi tee featuring ultra soft and light blue 100% cotton shirt.
Discover how solar cells make electricity with this awesome kit!
Provides the power to execute all the basic electrostatic demonstrations on an energetic and dramatic scale with up to 350,000 volts!