CST/berger 55-SLVP28ND 28X Magnification Automatic Level Kit Magnetically dampened, wire-hung compensator provides optimum range and accuracy Large, effective aperture and minimum focus of 1 feet Top-mounted optical peep-sight for quick reference Focus knob, clearly graduated horizontal circle and a compensator lock that protects level during transport Fine motion knobs on left and right sides with friction-baked rotation, endless horizontal drive