Economical professional performance - ideal for large classes! Durable ABS plastic skinfold caliper with comfortable "pistol grip" design includes a 22 page book "How to Measure Your % Bodyfat" with numerous illustrations and explanations on proper technique and procedures.

Utilizes one, two or four body skinfold locations to calculate bodyfat levels - front of upper arm, back of upper arm, waist and upper back. Spring-loaded arm exerts 10 grams of pressure for consistent results. 5 year warranty.