Feature: 1. [IP54 Water Proof] The automatic level features sturdy aluminum alloy body with IP54 water proof and dust proof rating, suitable for harsh environments. 2. [Auto Leveling] Magnetic damping compensator offers large compensation space and stable structure, ensures precise and stable measurements. 3. [High Definition Eyepiece] The crosshair can be clearly observed by rotating the eyepiece, supporting crosshair calibration to calibrate screws. 4. [Bubble Level] The level gauge is equipped with a bubble observer, which can assist in correcting the level. The bubble should be in the center, otherwise it needs to be calibrated. 5. [Clear Scale Disc] The auto level features a clear scale disc, allowing for 360 degree fine adjustment and accurate positioning for various needs. 6. [Versatile Applications] Ideal for use in construction engineering surveys, deformation monitoring, mining surveys, road surveys, bridge and tunnel surveys, and more. Specification: Item Type: Automatic Level Material: Aluminum alloy Compensator Type: Magnetic damping Deviation Per 1km Round Trip: 1.5mm Magnification: 32X Imaging: Positive image Objective Aperture: 30mm Field Angle: 120 minute of arc Shortest Sighting Distance: 0.5M Multiplication and Addition Constant: 100, 0 Compensator Working Range: ±15 minute of arc Leveling accuracy: ±0.4 angle of second Accuracy of Circular Bubble: 8 minute of arc / 2mm Rotating Base: 360 degrees or 400 degrees optional Battery: 3 x AAA batteries (not included) Laser Beam Coaxiality Error: ≤5 angle of second Laser Pointer Range: 200M Laser Power: 5MV IP Rating: IP54. Package List: 1 x Automatic Level 1 x Plumb Line 2 x Wrench 1 x User Manual 1 x Storage Box