Horizontal Circle – Graduated to single degrees and reads by vernier direct to 15 minutesVertical Arc – Reads to degrees 45° - 0 - 45°Horizontal & Vertical Lock & Tangent Screw – For precise movement controlBuilt-in sunshade for clear sightingLarge leveling screws – easy to turnTop-mounted leveling vial – for effortless viewingVersatile – Ideal for leveling foundations, driveways, patios, floors, for grading street, curbs ditches, for aligning fences; or any other light construction job