1、Multi Angle Measurement: This carpenter square scribing ruler quickly and accurately measures or marks angles from 0° to 90°. It includes preset angles of 22.5°, 30°, 45°, 60°, 67.5°, and 75° with corresponding 1/4 diameter angle pin holes. 2、Clear Scale: This hole position scribing ruler features laser printed scales to ensure accuracy and longevity. These markings are coated with a protective powder that is clear, easy to read and hard wearing, making it the perfect tool for woodworking projects. 3、Excellent Aluminum Alloy Material: This multi angle measuring ruler is made of excellent aluminum alloy material, which is sturdy and unbreakable, after multiple polishing process, the surface is sleek, to ensure the safety and durability of the user. 4、Compact And Portable: This 3D multi angle measuring ruler is small, lightweight, easy to disassemble, and very convenient to carry around and use, making marking or checking lines on boards a breeze. 5、Wide Application: This carpenter square hole scribing ruler has a wide range of applications and can be used at home, woodworking, crafting, furniture making, engineering projects, etc., very practical.