1、SPECIFICATIONS: The specification of the right angle gauge is 150x100mm, L shape design, with standard size, to ensure accurate measurement. 2、PORTABLE DESIGN: With ergonomic design, this 90 degree L square is comfortable to grip, convenient to carry to the outside for measurement. 3、MULTIPLE USAGES: Used for measuring right angle, vertical deviation of internal and external angles of workpieces, and checking vertical straightness. 4、METAL MATERIAL: This right angle ruler is made of excellent metal, with high hardness, wear resistance, corrosion resistance, and long service life. 5、APPLICABLE SCENE: The 90 degree gauge is suitable for construction, woodworking, industrial machine tool measuring projects, to meet more scenario needs.