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The Flexbar Surface Finish Comparator is designed to help you accurately measure and compare surface finishes in micrometers or roughness average (Ra). Made of durable ABS plastic, this comparator includes eight common finish specifications from 16-500 micro inches, enabling users to evaluate the surface finish of their machined components. With its convenient size of 3.5 x 5 inches and easy-to-read scale, this comparator is ideal for manufacturing, quality control, and engineering applications. It provides a quick and reliable way to determine if surfaces meet your required standards, ensuring quality and consistency in your products.