Good quality: excellent stainless steel forging, the ruler is made of high quality stainless steel material, the corner bracket is made of zinc alloy, which will not rust, not deform, the thickness is of 2mm, sturdy and durable for long time use. High-precision workmanship: Adopt laser technology for high-precision workmanship, double-sided ruler in mm and cm graduations. Embossed scale for easy reading and durability.Multifunctional: This combination square tool is practical and designed for drawing straight lines, drawing parallel lines, laying out, calibrating, measuring router bit depth, setting saw blades to table.Multi-dimensional measurement: carpentry squares can achieve level measurement, 90 angle measurement, 45 degree angle measurement, can be used as a 45 degree miter gauge, height or depth.With Adjustable Square Head: Consists of 300mm steel ruler and adjustable square head for accurate measurement. Help you make true accurate angle and lines with ruler and head.