Description of Precision Protractor Inclinometer V Groove Framework
【Measuring Range】4 x 90° , mm/m: 1000mm/m , %: 100% , in/ft: 12 in/ft. 【Accuracy】0° and 90°:≤0.1° , the rest : ≤0.2° ; Resolution: 0.05°. 【Backlight Funcitons】Be able to use it in the dark place. 【V-Groove Base】The V Groove base with strong magnets enables strong attachment over a curve or cylindrical magnetic surfaces such as metal pipeline or shafts. 【ERROR indicator】When the digital angle gauge is used in an incorrect position (tilts diagonally over 30 degree), display will report automatically ERRO to make sure that use is getting the accurate measurement.