Push Pull Muscle Strength Dyn. Digital 100 Lb. Fitness & Rehab Light and comfortable is what 401010 Light and comfortable is what defines these micro devices and they fit in all sizes of ears 65 kg Power Pack 6 DIGITAL (LCD) READOUT * 100 lb * The heavy duty dynamometer features the hydraulic system that is used in the industry accepted Baseline© and Jamar© hand dynamometers and pinch gauges * Hydraulic system ensures accurate readings * The dynamometer is much lighter (1 ) and easier to use than spring push pull dynamometers that are in common use today * Dial continuously shows instantaneous force and holds the maximum force reading * This maximum reading should be manually recorded prior to resetting for the next test * Available with either an analog (dial) readout or a digital (LCD) readout * Choose either 50 lb