Surface Quality:S/D (Scratch/Dig)
Abstract: The scratch-and-dig designation for a component or assembly is specified by two numbers. The first defines allowable maximum scratch visibility, and the second refers to allowable maximum dig diameter, separated by a hyphen.
80/50 represents a commonly acceptable cosmetic standard
60/40 represents an acceptable standard for most scientific research applications.
10/5 represents a precise standard for very demanding laser applications
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