The marked scratch changes position between our cover images

The seat exposes the feature. The two captures use the same support, but the cover can rock slightly before it is fully located.

Then seated needs a better definition. Can the person loading it recognise a properly located cover without looking at the camera image for reassurance?

Don't make a perfect seat the whole answer. An accepted polished cover still has reflections. Include that one when the vision person compares lighting, otherwise the reference set teaches an easy problem.

Agreed. Locate it consistently, then find out which reflections remain.

We checked loading with the fixture designer. One locating contact was obscured in the instruction photo. A new view shows it clearly, and both loaders can now check the cover is seated. The bright band still moves across the accepted cover with small presentation changes.

Who has to make those small changes in the eventual inspection sequence, or are they only part of this comparison?

Felix, I wasn't claiming the seat would cure reflections. I want the loaders to reproduce a comparison somebody can interpret.

Fair enough. Lin, has the vision person seen the originals without arrows? I'd hate to find the entire conversation is about somebody's annotation rather than the captured feature.

Luis, these changes are for comparing the imaging options, not an agreed operator sequence. Felix, yes, the originals are retained. Quality has now corrected the arrow against the physical feature; the old arrow was on the adjacent reflection.

Then label the comparison poses as comparison poses; our teaching notes once turned a trial variation into an extra loading instruction.

Done. The revised folder has the identified covers, original captures and the corrected feature mark. The accepted cover with the moving band remains in it. We are comparing two lighting arrangements; neither has been selected for the cell yet.

Thanks for coming back with the actual arrow error. Did the old marked images get removed from the teaching handout too?

Yes. The tutor opened the revised handout with us and matched its examples to the corrected folder. The imaging choice remains open, but the lesson no longer calls that band a scratch.