From its built-in leveling bubble that ensures accurate installation to its handsome design, accu-hite has long been the stadiometer of choice. The headpiece comes with a lock know for measurement accuracy and safety. For convenience, readings can also be taken in feet and inches. Measuring range is from 25" - 84" (61-212 cm) in 1/8" (1mm) graduations. Dimensions are 86 3/4" H x 11 3/4" W x 9 7/8" D. Has a 90 day warranty.