Each testing device features a special unit that automatically collects data, stores results, computes statistics and prompts you for the next test. When combined with optional Easy Docs Plus™ software, data can be transferred to PC word processors and spreadsheets. The Commander series includes instruments to measure grip strength, pinch strength, muscle groups, and pain threshold. Rated to 50 pounds with 0.2 pound resolution for accurate testing. Calculates CV, maximum force and fatigue for each repetition, plus left and right side averages and bilateral deficit.