Keson RRPA182 2-wheel, 17 5/8" Circ. Measuring Wheel with Paint ApplicatorsKeson RRPA182 Includes (1) 2 wheel, 17 5 8" circ. measuring wheel with applicator Keson RRPA182 Features Measure and mark simultaneously 5 digit, easy read, magnified counter measures 9,999', 11" without resetting Light weight tool Features a trigger just under the pistol grip Measure and mark alone Quicker than 2 or 3 people with a tape measure and spray gun