Ideal for long indoor runs, such as plant floor plans or outdoor measuring on firm surfaces. Large 39.37" circumference is more accurate over rough surfaces. Wheel is made of high impact ABS with a solid rubber tire. Telescoping aluminum handle. Counter is sealed to protect the mechanism. King-sized numbers are easy to read. Unit adds in forward motion and subtracts in backward motion. With kick stand. Measures up to 9,999’ 11" (in feet/inches) without resetting the manual reset buttons.