Handle can be placed in five grip positions, from 1-3/8in to 3-3/8in (3.5 to 8.6cm), in 1/2in (13mm) increments to accommodate any hand size. Peak force needle remains at the max. reading until it is manually reset. Records in both lbs. and kg., 200 lb. (91kg) max. Carrying case included. Each dynamometer is calibrated and is certified accurate. One-year warranty.