RT50 CST/berger 19” Single Measuring Wheel Feet/Inches (Rolatape) RT50 CST/berger 19” Single Measuring Wheel Feet/Inches (Rolatape) accurately calculates distances in feet and inches on grass or soil for up to 10,000ft and has a pistol style handle providing easy control. RT50 CST/berger 19” Single Measuring Wheel Feet/Inches (Rolatape) features 19in steel powder coated wheel spans providing precise calculations and a 5 digit counter with a handy reset button and is constructed with durable steel enabling any terrain.