Hydraulic Hand Held Dynamometer Toe Crests ISO 16840 4 Wheelchair Seating Exercise Balls ISO 16840 4 Wheelchair Seating Part 4: Seating Systems for use in motor vehicles * Weight Limit: 300 lbs (136 kg) * Warranty: Back Shell & Hardware: 3 Year Limited Warranty * The simple adjustment allows the cushions to fit the shape of the individual minimizing tissue deformation and maximizing blood flow Yields accurate grip strength readings without the subject being able to feel the handle move * Features an adjustable handle with five positions to accommodate to any hand size * The indicator remains at the subject's maximum reading unit until it is reset * Registers up to 200 pounds and reads in pounds and kilograms * Includes a carrying case *