Rotosure Deluxe 1000 Measuring WheelFeatures: Robust Measuring Wheel Trigger Brake in Handle Heavy Duty Shaft Folds in Half Push Button Release Clip Push Button Zero Reset Kick Down Side Stand Debris Removing Scraper Built in Carry Handle Wrist Strap Follows Fine Edges Runs in Straight Line Balanced In Line Movement Better Traction Wheel Runs on Sealed Roller Bearings Specifications: Accuracy 99. 5% Measuring Distance 9999. 9m Increments 0. 1m Wheel Circumference 1m Wheel Diameter 0.