Durable, accurate, economical skinfold caliper is easy to use, gives precise measurement of percent body fat. Has convenient trigger operation with pistol-grip handle; jaw pressure automatically adjusts to 10 g/sq mm. Direct reading scale measures 0 to 85 mm and is accurate to 0.5 mm. Rugged ABS plastic instrument can be dropped without damage. Instructions included.Only low-cost caliper which meets all of the requirements for jaw pressure and accuracy