Protractors by 2PM TOOLS. Details: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 ±0.05°at 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...