Self-locking, push-button retraction, flexible and durable, easy to get accurate measurements. Great for weight loss, online shopping or fat monitor to measure your waist, chest, arm, thigh, calf, hips and more. The sewing tape measure has clear markings on the top, easy and convenient to read and use. This telescopic ruler can accurately measure your waist circumference, arm circumference, leg circumference, etc. It is a good helper for your measurement, don't worry about inaccuracy. It can be used in school, home, gym, hospital, etc. 3 3/8"L x2 3/16"W x13/16"H