1、Accurate Measurement: Aluminum alloy material with high hardness, durable, and accurate measurement. Clear laser engraving size, accurate and easy to read 2、Measure and Transmit Angle Size: Works for measuring and transmitting angular dimension, stop or mark ruler for 45 degree and 90 degree angles of parallel lines. Use drill size with drill guide 3、Clearly and Easily Reading: Exquisite craftsmanship bring high hardness and durability. Reading clearly and easily, possess elegant appearance 4、Slide to Mark: When measuring, there is no need to flip the ruler itself, just slide to mark 45 degrees or 90 degrees 5、Improve Work Efficiency: The surface is finely polished, feels comfortable and easy to use. Help you improve work efficiency and save woodworking time