Feature: 1. Excellent Aluminum Alloy Material: This carpenter square layout tool is made of excellent aluminum alloy material for exceptional durability and accuracy, its slick design and accurately etched markings make measuring easy and accurate. 2. Multifunctional: This carpenter square is multifunctional and is a versatile tool that combines the functions of a rafters square and a protractor. Whether you need to measure angles, mark layouts, or determine vertical and horizontal readings, this tool can help. 3. Ergonomic Design: With an ergonomic design, as well as clear resolution markings to ensure ease of use and accuracy, this multifunctional rafter square allows you to easily and accurately measure angles and layouts for engineering and woodworking projects. 4. Wide Application: This triangle ruler rafter square has a wide range of applications and is specifically designed to meet the needs of engineers and carpenters. With its ease of use and highly visible markings, this tool enables efficient measuring and layout tasks. 5. Compact And Lightweight: This carpentry square layout tool is small in size and light in weight, which makes it very convenient to carry around and use, and can be used in a variety of situations. Specification: Item Type: Carpenter Square Material: Aluminum Alloy. Package List: 1 x Carpenter Square 1 x Clamp Block 1 x Fixing Screw