1、45 Degrees 135 Degrees: Carpenter angle measuring ruler provides 45 degrees and 135 degrees angles for architectural drawing, woodworking, and more. 2、Aluminum Alloy Material: Made of sturdy aluminum alloy material, with high hardness for durability, prevent distortion, practicality, rust proof, and durable to use. 3、Angle Measurement: Used to detect welding angles, measure 135 degrees deviation of workpieces, and check 135 degree components in equipment and structures. 4、Measurement Tool: Aluminum alloy woodworking scriber gauge ruler is ideal for measuring woodworking tools with 45 degrees and 135 degrees angle accuracy. 5、Versatile Use: Aluminum alloy woodworking ruler with wide application, great for construction, drawing, design, woodworking, and other applications.