Features a twist focus, 2.5x magnification, leveling screws with center line. Has a 8-minute circular vial, 3-prong forced centering and a 5/8×11 base. Easy plummet adjustment by four opposing caption screws. The optical plummet has a focusing range of 1.5 to 50 feet (0.5m to 15mm). The weight is 1.85 lbs. (.84kg). An optional padded nylon Cordura? carrying case is available, part #B8071. See Bags, Cases category.