Provides accurate, repeatable grip-force readings without the client feeling the handle move. Ideal for routine screening and evaluating hand trauma and disease. Handle can be placed in five grip positions, from 3.5 to 8.6cm, in 13mm increments to accommodate any hand size. Peak force needle remains at the maximum reading until it is manually reset. Records in both lbs. and kg., 200 lb. (91kg) maximum. Carrying case included. Each dynamometer is calibrated and is certified accurate.