This unit allows you to calculate your body fat percentage in the privacy of your own home. You’ll be able to clearly track your progress and determine whether you are losing fat, muscle, or both. This accurate tool reads body fat by measuring your skin fold. You’ll be able to read the results in either inches or millimeters. 3V Battery included. Digital Caliper Body Fat Analyzer This unit allows you to calculate your body fat percentage in the privacy of your own home. You’ll be able to clearly track your progress and determine whether you are losing fat, muscle, or both. This accurate tool reads body fat by measuring your “skin fold”. You’ll be able to read the results in either inches or millimeters. 3V Battery included.