Explanatory notes
… screws (bridge, crown, dial, ratchet, click, end‑stone cap or index disc, yoke, setting lever, etc.), taper pins, … or rough watch or clock movements of heading 91.10 , the cases of heading 91.11 or 91.12 and the watch straps, watch … and pinion, fourth wheel and pinion. (4) Motion work : cannon pinion, minute wheel pinion and minute wheel, hour …