Water Clock Kit
EDU 3070 Water
Clock Kit Make a clock that can
work just on tap water! You will
never need batteries again! Also works on a variety
of household materials such as: cola, fruit juice and even
ketchup! Try other materials and see how the clock never stops. This is
the best timekeeper you will ever have.
Tree of Knowledge EDU-3070 Water Clock Kit
educational, science, electronic, technology kits.
Ages 8 & up