1、The knife‑edge square is suitable for detecting angles and marking parts, and is a useful measuring tool for engineering construction. 2、The surface of the square is finely processed, glossy and without burrs, and will not scratch the workpiece or hurt your hands during use. 3、There is milled groove in the inner corner, which can quickly remove burrs and debris and make the working surface more tidy. 4、Made of high‑quality stainless steel, anti‑rust and corrosion‑resistant, not easy to break when used for a long time. 5、One‑piece structure processing, with high accuracy and high quality, long service life. Item Type: Knife Edge Ruler Material: Stainless steel Product Size (L x W): Approx. 63 x 40mm / 2.5 x 1.6in Thickness: Approx. 5mm / 0.2in Purpose: Suitable for detecting angles and marking on parts 1 x Knife Edge Ruler