Features • Premium Stainl Steel Construction - Made from high-quality stainl steel, this tool offers exceptional hardn, toughn, and durability for long-lasting use • Thickened and Varnished Body - Featuring a reinforced body and a protective varnish, this ruler effectively resists abrasion, ensuring reliable performance over time • Laser-Engraved Scale for Clarity - The laser engraving guarantees clear readings that remain legible, even after extensive use, enhancing accuracy in your projects • Versatile Angle Crossing Capabilities - Easily create 45° and 90° line crossings, as well as circular center line crossings, making it ideal for various applications in your work • Ideal for Hardware and Dimensional Projects - for tasks like cylinder centering and angle marking, this tool is a must-have for both profionals and DIY enthusiasts Features: 1、Forged of stainl steel, this center gauge ruler has high hardn, toughn and durability. 2、The ruler body is thickened, and the of the ruler is painted with varnish, which can effectively prevent the ruler body from abrasion. 3、The scale of the ruler is engraved by a laser, so the reading is clear, and it is not easy to blur the scale after long？term use. 4、This high accuracy center angle finder can make 45° line crossing, 90° line crossing, and circular center line crossing. 5、It is widely used in hardware procing, cylinder centering, angle marking, disc marking, etc. Specification: Item Type: Center Gauge Ruler Material: Stainl Steel Size: Approx. 250 x 160mm/9.8 x 6.3in Applicable Maximum Diameter: Approx. 230mm/9.1in Tolerance: ± 0.15mm Application: Widely used in hardware machining, cylindrical centering and marking, angle marking, marking discs, etc. Package List: 1 x Ruler 1 x Leather Cover Package List 1 x Ruler 1 x Leather Cover