This Baseline Hydraulic Hand Dynamometer gives accurate grip strength readings without the subject being able to feel the handle move. The dual-scale readout display range covers forces from 0-90 kg or 200 lbs, and the peak-hold needle retains the highest reading until it is reset. Dual scale shows both pounds and kilograms. The handles easily adjust to 5 grip positions, from 1 3/8” - 3 3/8” in 1⁄2” increments, and helps accomodate any hand size. Indicator remains at the subject’s maximum reading until reset. Carrying case and complete instructions included.