New ModelsPremium Material: Made of sturdy aluminum alloy after oxidation treatment, this set of saddle layout rulers is durable, resistant to distortion, practical, anti-rust and corrosion resistant.Surface: Laser engraved metric scales and corner angles on each sides of miter T rulers are clear and precise, making it convenient and easy to read value or make marks while using.Slide to Mark: There is no need to reverse the body when measuring, just slide to mark the right and left 45/90 degree angle.High Accurate: The square protractor helps you draws perfect horizontal lines while sliding the rule along the edge of your work. Measurement, correction, marking in one.Application: Thicken ruler design, make ruler stable and accurate, perfect for DIY, engineer, carpentry, woodworking and home use.