The TL20X transit level is ideal for fast set-up, simple to use for leveling and vertical applications. Clamps and tangents bring your instrument quickly on target 15 minute horizontal circle 3-screw leveling base with 5/8-11 thread for tripod Built-in sunshade with rubber eyepiece Magnification: 20X Leveling Accuracy: ±1/4-in at 100-ft (6mm @ 30m) Working Range: 200-ft (60m)