This bulb dynamometer easily and accurately measures grip strength. Features an easy-to-see red indicator arm which remains at maximum reading until reset.
4"L x 1-3/4"W Calibrated 0-15 p.s.i., Multiply reading by 4 to calculate in pounds. High-impact plastic gauges. Features an easy-to-see red indicator arm which remains at maximum reading until reset. Bulb contains natural rubber latex.