An elongated visible feature, such as a scratch or streak, evaluated by length, width, intensity, location, and the applicable inspection method.
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Meaning and boundaries
Linear does not identify cause. A line may be a groove, crack, coating scratch, transferred material, residue streak, or optical feature.
Why it matters in glass restoration
Separating morphology from cause helps technicians document what is visible before assigning a damage class or treatment.
Related terms
References
- ASTM International — ASTM C1036-25: Standard Specification for Flat Glass
Publisher’s original source - National Glass Association — GANA Glazing Manual, 2022 edition
Publisher’s original source - National Institute of Standards and Technology — Fractography of Ceramics and Glasses, 3rd edition
Publisher’s original source