2 in 1 Digital ProtractorMeasure not only length but also 360 angle (i.e. inside angle, outside angle). With a convenient lock button to lock the protractor in any position. Good MaterialThe material is super strong nylon fiberglass construction material, which has good rigidity and resistance to wear, not easy to deform, no scratched hands, it is a good choice for carpenters, plumbers. Length and Angle Measurement RangeLength measurement: 300mm; Angle measurement range: 000.0~999.9; Accuracy; 0.5; Resolution: 0.05/3'; Professionally measure inside and outside angles and angles of objects. With LCD DisplayHD LCD with electronic digital display, automatically shuts off for 5 minutes With D/M key, you can switch between degrees and minutes. HOLD and Zeroing FunctionWith HOLD button, you can record data during measurement, with ON/OFF/ZERO button, you can short press the button to record data at any angle Product Size: 317 mm Product colour: black Scope of delivery: One piece