[MULTIPURPOSE RULER]: The set square metal is equipped with an automatic adjusting nut, which can adjust and measure at will. It also has the functions of a protractor, center point measuring instrument, and level gauge [ACCURATE SCALE]: laser scale on the surface of the ruler, the numbers and scales are clear, 2mm thickened ruler body, not easy to wear [ADJUSTABLE]: With adjustable square head for precise measurements. Measuring range 0 ~ 300mm and adjustable angle. [HIGH QUALITY]: High precision manufacturing, double sided ruler, scale in mm and cm, easy to read, suitable for measuring, marking, designing and more. [WIDELY USE]: Multi angle measuring ruler, suitable for measuring angle, length, measuring circle center, ideal for engineers, carpenters, and more., Weight: 0.70988848364 Pounds, Manufacturer: Dapetz