The Trimcal Body Tape Measure is contoured to fit the body and lock in place for more accurate measurement.
The design of the Trimcal body tape measure makes it easy for you to get accurate measurements of your body parts such as your waist, thighs, hips, chest, arms, calves, and thighs.
The tape starts at approx 1.8 inches so that the measurement includes the portion of the case that is snug against the body when using the body measure tape. ... As a result, the measurement you read on the tape automatically subtracts this 1.8 inches for the casing, and the number you read on the tape is exactly accurate to your body measurement.