This simple and inexpensive device (a commercial one will cost you $97) will measure your hand gripping strength. It is made from 4 components: a fuel pump pressure gauge, a rubber tube, a tubing connector and a plastic water bottle.To use just squeeze the water bottle and note the psi reading on t...
By: JimRD
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from Instructables: exploring - technology - robots http://ift.tt/1UIPkkR



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