1、Excellent Aluminum Alloy Material: This woodworking T square ruler is made of excellent aluminum alloy material, which is CNC accurately processed, abrasion resistant, rustproof and long lasting. 2、Easy To Use: This T square ruler is practical and very simple to use, can be separated, press the head measuring block to separate the ruler body, the arrow indicates the direction. When there is a gap or not perpendicular to 90 degrees on the ruler body, it can be adjusted. 3、Compact And Lightweight: This woodworking T square ruler is small in size and light in weight, which makes it very convenient to carry aroung with you and use, and can be used in a variety of situations. 4、Multifunctional: This woodworking scriber T square ruler is multifunctional with precise holes and clear scales for hole marking, parallel scribing, perpendicular scribing, and other measuring needs. 5、Wide Application: This T shape architect ruler has a wide range of applications and can be used for woodworking, handicrafts, artifacts, architectural design, etc., which is very practical and convenient.