This indicator based fitness device is useful to test your hand strength and also build it up by measuring your performance improvement. It has a small C-shaped lever on the side of the gauge, which you can slide up to reset the indicator after every compression. A hand pressure device, it will help the fitness enthusiast to discover the strength in the hand. Simply hold the device and let the fingers loop over the press lever. Press on it as hard as you comfortably can and see the compression achieved on the indicator. Reset indicator after every press, by sliding up the C-shaped plastic lever next to the indicator to reset to zero.