Description This hard wearing measuring wheel is specifically designed for rough and undulating terrain. The high quality, rugged construction provides durability while the large circumference measuring wheel ensures the greatest accuracy over rough terrain. It has a heavy duty counting head fitted directly to wheel and a robust mechanical counter for accurate distance measurement of /- 1%. Built for use on challenging terrain, lateral motion in the wheel rim by up to /-17mm may be expected and will not affect the measurement. Features: Robust solid tyre fitted to spoked wheel Metric or imperial reading counter available Heavy duty counting head fitted directly to wheel Six figure counting head, 7mm high figures Scraper to prevent mud build up on wheel Adds forward subtracts in reverse Range 0 to 99999.9 meters or yards Range 0 to 99999’ 11” 3 Year Warranty Accuracy ± 1%