A broad, shallow-looking rubbed area made up of fine abrasion, transferred material, gloss change, or a mixture of these effects.

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Meaning and boundaries
Scuff is descriptive and should not be used as proof of scratch depth, cause, or removability.
Why it matters in glass restoration
The term distinguishes a diffuse rubbed patch from one isolated scratch while prompting checks for transfer, coating damage, and clustered fine lines.
Related terms
References
- GlassRenu — How To: Remove Glass-on-Glass Scratch Damage
Publisher’s original source - ASTM International — ASTM C162-23: Standard Terminology of Glass and Glass Products
Publisher’s original source - National Institute of Standards and Technology — Fractography of Ceramics and Glasses, 3rd edition
Publisher’s original source