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Controls: Quantity and size of local defects within a specific aperture.  Local defects could be scratches, pits, broken bubbles, sleeks, scuff marks or coating blemishes.

Related Terms: Scratch-Dig, ISO 10110 Part 7, Defect Grade

Specification Must Contain: Grade to be met under specific grading system

Optimax Preferred Specification: Scratch-Dig per MIL-PRF-13830B

Reasons: Historical familiarity

Manufacturing Standards: MIL-PRF-13803B, ISO 10110-7, OEOSC OPI.002-2009

For More Information:
Optimax’s Tolerance Attributes Video