Specification: Item Type: Body Fat Caliper Set Material: ABS Plastic + PVC Tape Measurement Method of Fat Caliper: 1. Abdomen, front thighs, waist and biceps should be selected as measurement points. For men, chest should be added and for women, armpit should be added. 2. Lift the skinfold with your thumb and forefinger perpendicular to the long axle of the skin 3. Contain wrinkles when measuring 4. When measuring, let the body fat claw be perpendicular to the fold. Slowly release the pressure on your body fat caliper 1cm from your thumb and forefinger. Scope of BMI Tape: BMI Tape, Waist Measure, Measurement, Fitness, Weight Loss Length of Tape: Approx. 150cm / 59.1in Applicable Parts: Arms, chest, waist, calf, thigh, buttocks and so on Usage of BMI Tape: 1. Press the button in the middle to retract the tape measure If you're on a diet, help measure your body shape and check your progress Just pull the tape measure and the results will be locked in place 2. Button retract and lock function to ensure comfortable measurement Package List: 1 x Fat Caliper 1 x BMI Tape 1 x ManualTrack your progress using the body measurement tape by simply wrapping around your body part and charting your progress. The fat measuring tool and body tape measure are small in size and light in weight, and can be easily put into your gym bag. You can use it in your gym, home and office. BMI tape measure is suitable for arms, chest, waist, calves, thighs, buttocks, etc. The world standard for obesity is: BMI is within the normal range of 18.5 to 24.9, BMI greater than 25 is overweight, and BMI greater than 30 is obesity. Body fat caliper suitable for abdomen, front of thighs, waist, biceps measure, accurate measurement and simple . The PVC plastic ruler can pass the European and ROHS and 6P environmental tests. Does not contain harmful chemicals, is safe to use, resistant to high temperature, corrosion, acid and alkali.