Product details:

All-metal backbone for the strongest, most durable frame with reinforced vial retention. Sharpsite Vial Technology is impact protected and provides the best readability. Accurate to .029 degrees ( .0005 in./in, 0, 5mm/M) for guaranteed lifetime accuracy. High Contrast Vial System is easy to clean and optimizes visibility. High density, removable end-caps protect frame and provide access in tight spaces. Wide, durable handles for comfort and portability. Precision milled measuring surface guarantees accuracy in all working positions. Overmolded, non-slip grips stick to the wall and prevent sliding.