Precise scale: This combination square ruler adopts laser engraving, the scale is precise and not easy to wear, and it adopts double-sided scale, metric and imperial respectively. Multifunctional measurement: This ruler can measure various data, such as right angle, 45 angle, 0-180 degree precise measurement, outer right angle, inner right angle, center right angle, etc. Practical design: combination square equipped with a built-in level and scriber, you can easily mark without a pen. Detachable design, each part of the steel ruler can be used separately. High-quality material: The body of the combined square ruler is made of stainless steel, and the corner frame is made of aluminum alloy, which is durable and has a long service life. Multifunctional use: The right angle ruler measuring tool can be used in woodworking, construction, office and other places. Ideal for carpentry and renovation projects.