RE: [Demo notebook] Reference notebook: corrections and recurring beginner questions · RWI-30724

Case 39 — Movement identification: the limits of a rotor photograph · source wording exercise

Only part of the movement is visible and the rotor hides several bridges. Which details can be described without claiming certainty?

Review focus: source wording. Retain the source wording beside any paraphrase. Use the original answer fragment “Ask a qualified watchmaker to inspect it if identification matters for…” as the discussion anchor; no new event or result is supplied.

Exercise RWI-30724/39: address this question within its stated limits.