The Lafayette Digital Hand Dynamometer is designed to give accurate grip strength readings for both routine screening and for evaluation of hand trauma or diseased hands. The Digital Hand Dynamometer features an easy-to-read graphical LCD display, interactive menus, a battery life of 10 hours and a built-in stored data browsing capability that can retain up to 250 tests. The Isometric grip force is scored with ±1% accuracy from 0-250 lbs. It automatically shuts down after 5 minutes of inactivity.