Introduced in the 1960's the Measure Master® Commercial Series was designed to handle the needs of professionals and homeowners alike. While maintaining Rolatape's focus on quality and accuracy, the Measure Master® Commercial Series features an axle driven counter that adds in forward and subtracts in reverse. The Measure Master® Commercial Series is priced right with quality that beats the competition.A money saving workhorse is the best way to describe the MM-30 Measure Master Measuring Wheel. From appraising, landscaping and construction to fencing the MM-30 can easily handle the job. The MM-30 features a 5-digit, push-button counter, a steel wheel, and a convenient flip up stand.