Explanatory notes
… wheel and pinion, fourth wheel and pinion. (4) Motion work : cannon pinion, minute wheel pinion and minute wheel, … staff, hairspring (flat, Bréguet, cylindrical), tuning‑fork, stud, collet, regulator, index stud, end‑stone cap or … fixed winding keys and knobs for setting. (C) STRIKING WORK PARTS (1) Striking work of alarm clocks : stop or …