Combo Square Adjustable Stop Angles: Designed for 45angles, this ruler can easily transfer measurements and draw lines quickly. Made of 300mm steel ruler and high quality aluminum alloy stop with nuts for precise angle and . The 12 inch metal measuring ruler is easy to use: simply move the ruler to the desired position and tighten the nut. Perfect for DIY woodworking, this ruler will help you save time and increase efficiency. The ruler features clear and precise markings that are easy to read and resistant to wear and tear. The comfortable grip makes it easy to use for extended periods of time. Great for measuring depth, drawing , and more. perfect for professional woodworkers and DIY enthusiasts alike. Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:As Shown Material:Aluminum Alloy Package Contents: 1 * Steel Ruler Positioning Block Gauge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.