The Lange Caliper Pro Kit includes: Lange Skinfold Caliper with Case and Manual, AnthroFlex NA305 Anthropometric Tape Measure BodyTracker Software for Body Fat, and 5-step Calibration block 10-50mm. LANGE SKINFOLD CALIPERS are trusted at fitness centers and by personal trainers and healthcare providers worldwide. Lange calipers come with compact and attractive hard case, plus an instruction book. 1.0mm precision ANTHROFLEX ANTHROPOMETRIC DIAMETER TAPE MEASURE 2M The AnthroFlex NA305 anthropometric diameter tape measure has a 6mm x 2m flexible steel blade with blank space before the zero. Same specifications as Lufkin tape measure CALIBRATION BLOCK FOR LANGE SKINFOLD CALIPER 5-STEP The Lange skinfold caliper calibration block is made of aluminum and will test calibration at 10mm, 20mm, 30mm, 40mm, and 50mm. Note that it will only test the calibration; it will not calibrate your equipment. BODY TRACKER SOFTWARE FOR BODY FAT With BodyTracker software you can monitor changes to body fat percentage, weight, and appearance. Create an unlimited amount of profiles. SPECIFICATIONS: System requirements: Windows; In English; Most recent software version.