2-in-1 Digital Protractor - Measure not only the length, but also the 360 angle (inside angle, outside corner). Locking Function Use locking screws to lock both feet in the desired position or angle. Large 1" LCD Display - This metal protractor with electronic LCD digital display, you can switch between degrees and minute with the "/" button The "HOLD" button stores the data during measurement, the "ON/OFF/Zero" button resets the data to zero by short pressing any angle; Corner lock button for every angle. Length, Width & Accuracy Length Measurement: 400mm; Measurement Angle: 000.0~999.9; precision; 0.3; resolution: 0.1; Measuring range: 0-360. The body of the ruler is forged from high-quality stainless steel, which ensures the quality, corrosion resistance, and durability of the ...