RT320 CST/berger 12-1/2” Single Measuring Wheel Feet/Inches (Rolatape) RT320 CST/berger 12-1/2” Single Measuring Wheel Feet/Inches (Rolatape) features ab aluminum wheel for sturdy and more effective measuring in all types of terrain and a counter reset button in the handle eliminating the need to bend over to reset. RT320 CST/berger 12-1/2” Single Measuring Wheel Feet/Inches (Rolatape) features a brake trigger in the handle increasing accuracy and automotive belt drive system accurately measures distances 1in up to the nearest 10,000ft and an over the wheel counter gives enhances readability.