1、The knife‑edge‑shaped square is a one‑piece structure processing, high accuracy and not easy to break. 2、The surface of the square ruler is carefully processed to reduce errors and make the measurement more accurate. 3、Made of high‑quality stainless steel, high hardness and anti‑corrosion, can be used for a long time. 4、The ruler body is thickened to increase the contact area with the measuring surface, and the measurement is more stable. 5、The size of the knife‑edge square is 200x125mm, which is suitable for detecting angles and marking parts. Item Type: Knife Edge Ruler Material: Stainless steel Product Size (L x W): Approx. 200 x 125mm / 7.9 x 4.9in Thickness: Approx. 6mm / 0.2in Purpose: Suitable for detecting angles and marking on parts 1 x Knife Edge Ruler