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Hand Dynamometer

This simple hand dynamometer is made by attaching a strain gauge to an easily available Hand Exercise Grip.

"A hand dynamometer is used to measure grip strength. The measurement of grip strength allows for comparison of left and right hand grip and muscle fatigue. Muscle fatigue can be measured by comparing the difference in hand strength measurements taken before and after an experiment has been performed. In sports, handgrip strength is important for those games where the hands are used for catching, throwing or lifting. In geriatric, one study found that poor hand strength can be used to predict disability in older people."

From Emant Pte Ltd which has several other cool projects to check out.