Synthetic demo • AI-assisted. Fictional discussion exercise with simulated dates. No real purchase, customer review, patient, expert identity or experimental result is represented.
Two straps share the same nominal width but differ in thickness and spring-bar clearance. Which dimensions need checking? This is an explicitly synthetic discussion case for reviewing evidence and documenting uncertainty; it does not describe a real purchase, patient or experiment.
Discussion record: WATCH-13161. No additional facts are implied by this exercise format.