The Milwaukee 12� Measuring Wheel was designed for extreme durability, increased ergonomics, and productivity. Constructed of reinforced aluminum frames and reinforced folding joints, the Milwaukee measuring wheels are able to withstand the toughest jobsite conditions. Durable locking pivot points help quickly fold the units for transportation and storage. To prevent build-up of dirt and grime that could potentially jam the wheel, the 12� Measuring Wheel has also been designed with a Debris-Cleaning Wheel Flap that easily clears away contamination while rolling. In addition, the 12� measuring wheel also includes a reinforced kick stand. The pistol grip handles, designed to provide similar ergonomics to that of a power tool handle, fitting the hand of the user better than other wheels on the market. These handles feature a top brake function that can be used to �lock� the wheel and the reading, increasing accuracy. The 12� Measuring Wheel is also designed with a top handle clearing function for easier use, allowing the user to reset for each measurement without bending over.