Ideal for routine screening of grip strength and initial and ongoing evaluation of clients with hand trauma and dysfunction. Virtually leak proof hydraulics and isometric design Ensure accurate, reproducible results and years fo reliable service. In today's health care environment, accurate and objective data is required for reimbursable rehabilitation services, making the JAMAR Hydraulic Hand Dynamometer an indispensable tool. Built to last, a shock resistant rubber cap protects the stainless steel gauge and a wrist strap prevents accidental damage if dropped. The JAMAR Hydraulic Hand Dynamometer combines precision with convenient features: Dual scale readout displays isometric grip force from 0 to 90 kg/ Peak hold needle automatically retains the highest reading until reset/ Handle easily adjusts to five grip posistions, from 35 to 87 mm, in 13mm increments.