Can be easily scribed, 45/90 degrees available. 90° Aluminum Alloy Right Angle Tool Welding Gauge.. Practical measuring tool for woodworker, practical and time-saving. Quick and easy operation. It can mark soft metal, wood, and is perfect for finding accurate centers. High strength and quality, corrosion resistance.. This ruler is easy to handle and has good working efficiency, which can increase efficiency and save time. Features: 1. Can easily write, 45/90 degree available. 2. This ruler is easy to handle and has good working efficiency, which can increase efficiency and save time. 3. High strength and quality, corrosion resistance. 4. Quick and easy operation. It can mark soft metal, wood, and is perfect for finding precise centers. Specification: Material: Aluminum Alloy Angle: 45°/90° Color: Red Measuring Range: 100mm