Feature: 1. HIGH DURABILITY: The metal straight edge tool is made from high performing S50C steel. Heat treatment makes it resilient, stable, rust resistant, and wear resistant. The tool is reliable to use with a long lifespan. 2. PRECISION GROUND EDGE: Boasts an accuracy of +/- 0.001 inch, ensuring meticulous inspections and true precision, eliminating the imprecision of visually inspecting cylinder heads for flaws, providing a reliable method for detecting flaws in cylinder heads and other components. 3. POWERFUL FUNCTION: Designed for checking cylinder head and engine block flatness and straightness, allowing you to inspect for flaws on engine blocks, cylinder heads, fly wheels, main bearing saddles, cam bearing saddles, cam covers, and bell housings and other types of equipment. 4. EASY TO STORE: Comes complete with a blow molded box for easy storage and transportation. The reliable case protects the tool from damage, keeps it clean and organized, bringing you professional and stable use. 5. PRACTICAL TOOL: The machinist precision steel straight edge tool is a vital addition to your inspection routine, significantly improving the accuracy and effectiveness of your quality control measures, thereby promoting the longevity of your equipment. Specification: Item Type: Machinist Precision Steel Straight Edge Tool Material: Steel Application: Suitable for inspecting cylinder head and engine block surfaces, This machined straight edge allow you to inspect for flaws on engine blocks, cylinder heads, fly wheels, main bearing saddles, cam bearing saddles, cam covers, and bell housings and other types of equipment. . Package List: 1 x Precision Steel Straight Edge Tool 1 x Blow Molded Box