How do you track if you are losing fat, or muscle, or both? The reading is given in either inches or millimeters, which you compare to a chart with age and gender to arrive at your body fat percentage. This inexpensive skinfold caliper shows the results in digital form and are easy to use in the privacy of your home with superior accuracy and reliability. The “skin fold” method measures your body fat percentage by pinching your fat with your fingers then measuring the thickness with a body fat caliper. This Digital Body Fat Caliper can accurately determine your body fat by using "skinfold" method.