The Slim Guide Caliper Kit by AnthroFlex includes: Slim Guide Skinfold Caliper (black), BMI Tape Measure, Vinyl Transport Bag: THE SLIM GUIDE SKINFOLD CALIPER is the most widely used caliper in the world. It is the only low cost skinfold caliper accurate enough for professional use, with results comparable to the Harpenden caliper. Includes the book "How To Measure Percentage Bodyfat". Durable ABS construction. BMI TAPE MEASURE With the body mass index (BMI) tape measure you can monitor and assess changes to your body. Then use the calculator function to quickly determine BMI and obesity risk. FEATURES: Range: 0-150 centimeters in circumference; One-handed use and push button retraction; BMI calculator function.SLIM GUIDE TRANSPORT BAG Nylon transport bag with zipper for the Slim Guide skinfold caliper.