I'm keeping an accepted shiny example and a real faint reject in our UR5e bezel comparison, but the lesson slides still use old scratch arrows drawn before the holder was changed. The samples are identified. I reckon the immediate job is fixing those links and repeating the presentation check, not buying another light to make the arrows look right.
Withdraw the misleading slides and have quality relate each remaining mark to the identified physical sample under its inspection method. Then review the current holder with the person who loads it. I wouldn't simply move the arrows to wherever the bright line appears in a newer picture. Keep the real faint reject visible in the comparison as well as the accepted shiny one, or the lesson may become beautifully consistent at looking in the wrong place.
Old slides withdrawn from the shared lesson folder. Quality has matched the physical decisions to the retained bezel images; the next loading comparison uses the current holder and both examples. Still waiting on that comparison, so no new tuning result to report.