The RRT12 offers a counter reset on the handle and on the unit housing. No more beding over, lifing the wheel or stepping on it to reset it to zero. Additionally, the reset on the housing is reinforced to protect it when resetting the counter with your foot. The brake on the pistol grip stops counting instantly. Stop adding lengths accidently by putting the brake on exactly when you need it. The collapsing hinge snaps into extended lock with the flick of a wrist and it disconnects if you forget to press the unlock trigger. Center line handle design with counter balance of top of the wheel aligns for perfect balance. This makes measuring easier and more accurate. Compact fold down allows the wheel to easily reduce to 1/2 its size for storage and portability. The flip down kickstand keeps the wheel upright when you need your hands free to perform other tasks and stays out of the way as you measure. Gear and shaft transmisssion for highest measurement accuracy and strength. No belts to stretch or fail. Lock your handle in place when you're not using the wheel. Our clamp protects the extension hinge from breaking. Enhanced pistol grip Reset trigger Counter reset on the handle Center line balance Folds down to 12 its size