Therapeutic Hydraulic Pinch Gauge is designed for both routine screening work and for evaluating trauma or diseased hands. A precision instrument for measuring the fingertip pinch force. Excellent for training and evaluating the pinch ability of the upper extremity prosthesis user. Indicator pin remains at highest level of strength until reset. This unique design frees the patient to perform a true pinch maneuver. The therapist, not the patient, supports the weight of the gauge. The strength testing can be viewed as pounds or kilograms. Includes instructions, Measures pinch force to 45lbs. Each dynamo-meter comes in a rugged carrying case.