A hyperextension finger Goniometer that can be held and operated with one hand. Measures extension/hyperextension and flexion of the digits from the dorsal surface of the hand for increased accuracy.Protractor measures 0 degrees - 110 degrees in 2 degrees increments. A 10-cm scale (millimeter increments) on the grip allows easy measurement of fingertip-to-palm distance. Big, well-contrasted and easy-to-read figures. Latex free.