Get fast, accurate measurements for on-site linear, area, and volume estimates. The perfect tool for any pro that needs fast, affordable one-person measurements, indoors or out. Stepsaving functions calculate and store intermediate and total lengths, find square areas, cubic volumes, and more for up to nine different areas. Unique data storage capability helps reduce field notes and costly miscalculations. Large, easy-to-read LCD displays measurements to 999,999.9 feet (or meters, yards, inches) with full display spell-outs and built-in LCD contrast control. Convenient kickstand folds out of the way when not needed. Wheel circumference 1 meter (393/8"). Wheel diameter 0.319 meter (129/16"). Weight 6 lbs. Full one-year warranty.