This professional-grade Keson RoadRunner digital measuring wheel is loaded with convenient features to make your measuring jobs easier. Features include an eight-measurement memory, backlit LCD display,“wheel radius addition” for wall-to-wall measuring, area calculation and auto shutoff. Unit reads feet, inches, continuous inches, 10ths and metric. Seven-digit display reads up to 99,999 ft. 11 inch. or 99,999.9 in 10ths and metric. Additional features include a 15-1/2"-dia.measuring wheel, collapsible handle for easy storage, kickstand and 3/4"-dia. steel tube frame. Accuracy is ±2" per 100'. Requires (2) AA batteries (not included). 8.4 lb.