The scale conforms to S.A.E. Buy Cenipar Trailer Hitch Lock Set Includes Black Universal Trailer Locks Ball Hitch, 1/2 and 5/8 Trailer Hitch Lock Pin, Trailer Hitch Coupler Lock Pin, Fit 1-7/8, 2 and 2-5/16 Couplers(Black Product Benefit: Constructed using pure nickel material, guaranteeing durability and longevity. Product Benefit: Complies with ISO 2632 standard, ensuring high-quality performance and reliability. Product Benefit: Allows for precise examination of surface roughness of workpieces, with an accuracy range of +12% to -17%. • Product Benefit: Complies with... Advantages Of Measuring Surface Roughness With White Light Interferometry and military specifications for visual and tactile inspection. Precise 30 Piece Composite Set of Roughness Standards - 4101-0030 Product Benefit: Enables comparative analysis of workpiece surface roughness, facilitating efficient quality control. With this set, quick and easy comparisons can be made, eliminating costly checking methods, saving production time, and preventing the production of scrap caused by poor finishes. Manufactured to ANSI-B-46.1-1985 standards, this set is truly international with markings in AA (microinches) and metric in Ra (micrometers). Product Benefit: Allows for precise examination of surface roughness of workpieces, with an accuracy range of +12% to -17%. Made of solid electroformed nickel, this set provides a realistic representation of the feel, appearance, and texture of machined components.