1、[Accurate Measurements] The 3D multi angle measuring ruler ensures accurate measurements and angle checks. Engraved scale has an accuracy of ±0.004in. 2、[Multi Angle Measuring] The carpenter square allows for easy marking of 10, 22.5, 30, 45, 50, 60, 67.5, 70, and 90 degrees, equipped with fixed angle positioning pin for convenience. 3、[Easy Line Drawing] The woodworking square features incremental holes of 1/16 inch, enabling the drawing of parallel lines. Easy for marking mortise and tenon lines, 0.8mm diameter hole is suitable for most woodworking pencils. 4、[Premium Material] Made of aluminum alloy, this hole position scribing ruler offers long lasting durability, suitable for woodworking and carpentry. 5、[Ease of Use] The woodworking square ruler is easy to use, with a compact design, makes it portable and convenient to carry. Item Type: 3D Multi Angle Measuring Ruler Material: Aluminum Alloy Feature: Square woodworking square is easy to use and lasting. Accurate right angle check, easy to carry in your pocket. 2 x 3D Multi Angle Measuring Ruler Parts 2 x Screws 1 x Positioning Pin 1 x Special Installation Wrench