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but you supply the potatoes
reliable robust barometer
this one also has a 40-page illustrated booklet with instructions
but you supply your container (a clear plastic bowl will do
Buffer solution and meters enable measurements to within 0
Tin Can Edge Detector Robot Market but you supply the potatoesAssemble your own robot with the remarkable ability to detect table edges and avoid falling over them. Illustrated instructions and necessary pieces included except you supply the can and an AAA battery. An entertaining engineering challenge for all, recommended for 8 12 year olds. Part of 4M's Green Science series
