ReferenceDesk 05680Participant22 Nov 2021#1 A bright line appears in one polished-case image. What additional evidence would distinguish a mark from reflected light? Reply scope: address the opening question, explain the supporting record or reasoning, and state the limit of the answer.
DialNotes 05681Participant22 Nov 2021#2 Ask for photographs with the light moved and retain the same viewing angle. A mark should be assessed across multiple views; aggressive polishing is not an appropriate diagnostic test.