2 in 1 Protractor Ruler Combination of a ruler and a protractor. You can measure lengths and angles for easy measurement. The digital angle gauge has metric and imperial sizes laser engraved on the edge of the ruler,as well as an accurate digital display. Easy and Accurate to MeasureDigital LCD display for easy reading; accuracy 0.5; resolution 0.05; relative and absolute angle measurement; hold and reset function; automatic shutdown after 6 minutes of inactivity. Reset and HoldReset button for zeroing at any angle for relative measurement; button hold angles at all times. Lightweight and Durable, LCD DisplayThickened nylon glass digital bevel angle finder, wide, good rigidity, wear resistance, no deformation. When measuring an angle, the protractor has a large, easy-to-read LCD display. AttentionStainless steel has sharp edges. Be careful when using and keep out of reach of children.