1、Excellent Aluminum Alloy Material: This small carpenter square is made of excellent aluminum alloy material, with red anodized finish, which is beautiful, rust proof, erosion resistant and abrasion resistant. 2、Laser Engraved Scale: This mini carpenter square uses laser engraved scale, which is clear and easy to read and measure, and it is designed with three accurate scales, which is easy to read and convenient to draw lines. 3、Multifunctional: This triangle square ruler is designed to quickly and accurately measure or mark angles from 0 to 90 degrees. It includes preset angles of 22.5°, 30°, 45°, 50°, 60°, 67.5°, 75° and 80° and corresponding diameter 1/4 holes for angle pins. 4、Compact And Lightweight: This woodworking machinist measuring square is small in size and light in weight, which makes it very convenient to carry with you and use, and can be used in a variety of situations. 5、Wide Application: This 90 degree mini carpenter square has a wide range of applications and can be used for woodworking, engineering and construction tasks for crafting, furniture making, engineering design and more.