From the Manufacturer 31-Series Measuring Wheels – Accurate, well balanced, easily portable for many applications. Featuring a 5-digit counter and pushbutton reset, all MeasureMark® measuring wheels are available in feet and inches, feet and 10ths, or meters and decimeters. Counters measure up to 9,999 feet or 9,999 meters, the competition only measures up to 1,000 feet or 1,000 meters! Heavy duty die-cast aluminum wheels are standard on 10-inch and 12-inch wheels. 4-inch measuring wheel are available with aluminum or ABS plastic wheels. Kickstand is standard on 10-inch and 12-inch wheels.