Damage categories and surface conditions

The measured end-to-end extent of an individual damage feature along its principal path.

An area containing many scratches whose combined distribution is more relevant than any single line.

The vertical distance from an established original or surrounding surface reference to the deepest measured part of a scratch groove.

An elongated area of surface damage produced by sustained sliding contact that may include multiple grooves, transferred material, and edge pileup or chipping.

A visibly pronounced groove created by concentrated mechanical contact that removes or displaces surface material.

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

Multiple blemishes located close enough together to be evaluated as a group under a defined inspection area.

A localized blemish whose dimensions are small enough that it is evaluated primarily as a point-like feature under the applicable product standard.

An elongated visible feature, such as a scratch or streak, evaluated by length, width, intensity, location, and the applicable inspection method.

A visible surface condition that departs from the specified appearance of glass or a coating under a defined inspection method.