The Slim Guide Skinfold Caliper Basic Anthropometry Kit includes: Slim Guide skinfold caliper, AnthroFlex small bone anthropometer (plastic), AnthroFlex anthropometric tape measure, calibration dowels, dermographic marker, transport bag. The Slim Guide Skinfold Caliper is the most accurate affordable caliper. Produced since 1976 it is the most widely used caliper in the world. Used by professionals and researchers world wide it is the only low cost skinfold caliper accurate enough for professional use. It has the same jaw area and spring tension as the Harpenden and studies have shown that the measurements obtained are very comparable. Includes the book "How To Measure Percentage Bodyfat". Durable ABS construction. Thus the Slim Guide is almost indestructible. The springs and hardware are made of stainless steel adding to its high quality. SPECIFICIATIONS: Range: 80mm; Weight: 7 ounces (200 grams); Dimensions: 7 x 12 x 1 inches (18 x 30 x 2.5 centimeters); Materials: Plastic, metal spring. ANTHROFLEX SMALL BONE ANTHROPOMETER: The AnthroFlex small bone anthropometer is the perfect option for students and other professionals learning anthopometry techniques. A small bone anthropometer may be used to measure the diameters of the humerus, femur, bimalleolar, biestiloideo, hand and foot width. SPECIFICATIONS: 140mm range; ABS plastic construction. ANTHROFLEX 305 ANTHROPOMETRIC TAPE MEASURE: The AnthroFlex NA305 anthropometric diameter tape measure has a 6mm x 2m flexible steel blade with blank space before the zero. The top side measures length in millimeters, and the reverse side calculates the diameter that corresponds to the length. Ideal for diameter, circumference, small trees, pipes, pi, etc. SPECIFICATIONS: Blade width: 6mm; Blade length: 2 meters; Blade material: enameled flexible steel; Units of measurement: metric; Shell material: ABS plastic. Also includes Viscot marker to mark testing sites, and a nylon transport bag with zipper. Calibration dowel included to test calibration over time; note that it will not calibrate the caliper.