Specification JOBSITE TOUGH: IP54 Dust/Water splash resistant protection for harsh environments. 4 SETTINGS MODES: Measure degrees, pitch IN/FT, mm/M, and percent slope. HIGH ACCURACY: Accurate to the 0.1 at 0 and 90 and 0.2 from 1-89. RESOLUTION: 0.01 at 0 and 90 and 0.05at any other angle. AUDIBLE INDICATOR: Audible tone indicator in a horizontal or a vertical position. HOLD FUNCTION: Hold button to transfer target values to other work areas. ZERO FUNCTION: Zero it anytime by REF button. LARGE LED DISPLAY: Large, bright LED display for day or night visibility. STRONG AND STURDY: Boasts heavy-duty Neodymium magnetic base. LOW BATTERY INDICATOR. FEATURE RICH! Dual functionality of true level AND relative angle finding using alternate zero references makes it a super versatile precision tool. Bright green LED display makes it easy to read your measurements all day and night. The built in HOLD function makes it easy to lock-in a reading before moving it, and an optional Audible tone alerts you to level and plumb readings. The strongly magnetized base lets you attach directly to any ferrous metal surface. It features quick user re-calibration and includes two AAA batteries. MANY USES It can be used to accurately measure level, tilts, angles, slopes and bevels on construction and repair sites, equipment installations, welding fabrication jobs, solar installations, automotive shops doing frame and alignment work or anywhere precision leveling and angle finding is needed. HIGH-ACCURACY -- Accurate to the 0.1 at 0 and 90 and 0.2 from 1-89.; displays angle and bevel readings in degrees, pitch IN/FT, mm/M, and percent slope. Great for roofs, rails, ADA ramps JOBSITE TOUGH -- Sturdy solid I-beam aluminum frame, Neodymium magnets, rubber end caps and IP54 dust/water splash resistant protection for harsh working environments DUAL FUNCTIONALITY With STRONG NEODYMIUM MAGNETS -- As a true (absolute) digital level and electronic inclinometer / protractor lets you set or check relative angles between surfaces. Plus, magnetic base firmly attach to ferrous metal surfaces like conduit, pipe, steel construction framing, metal fabrication and more LARGE, BRIGHT GREEN LED DISPLAY With AUDIO INDICATOR -- This level features a large, bright LED display that flips, so you can easily read your measurements all day and night even in the darkest spaces. What's more, we craft our digital level with audio indicator functionality, so you can achieve level and 90 degrees even with your eyes closed V-GROOVE MAGNETIC BASE -- Magnetic v-groove base firmly attach to ferrous metal surfaces like conduit, pipe, steel construction framing, metal fabrication