Precision Skinfold Caliper - Easy, Reliable Tool for Monitoring Body Fat - Quick Start Guide for Beginners, Detailed Booklet This inexpensive device will give you a far better picture of your fat level than fancy fat-level monitoring gadgets. It doesn't even require batteries The spring-loaded mechanism ensures that consistent pressure is applied when measuring. You will be able to obtain accurate reading each time and keep track of your progress in confidence. This tool is made to do one thing well. You will get precise skinfold measurements easily in your own home. Used by personal trainers, dieticians, and ph icians Easy and accurate circumference measurement of different body parts Colour: Black Size: as shown Quantity: 1pc Kind tips: 1.As different measuring methods,it will occur 1-3 cm deviation about the items,please ensure that it is okay for you before ordering. 2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding. 3. Only the above package contents, excluding other products.