Features： 1、Aluminum Alloy: The right angle positioning ruler is forged with aluminum alloy 6061, which is rust prevention and non corrosive, and can be used permanently. 2、Application: Suitable for woodworkers to measure height, 90° fast fixed right angle positioning, accurate corner marking angle. 3、Precise Laser Scale: The use of precise laser scale, simple and convenient operation, simple and beautiful appearance. 4、Wide Application: Can be widely used for the assembly and DIY of drawers, cabinets, frames, furniture cabinets, etc. 5、Basic Specifications: The thickness of the ruler is about 15mm, the measuring range is 75x45mm, and is small and portable. Specification： Item Type: 90 Degree Positioning Squares Material: Aluminum Alloy Colour: Red Approximate Ruler Thickness: Approx. 15mm / 0.60in Measuring Range: Approx. 75 x 45mm / 3.00 x 1.77in Package List： 1 x Right Angle Positioning Ruler