Movement
AssemblySpring-driven movement built on a jewelled plate: a fusee equalises the mainspring torque, a spring-detent escapement frees the balance to swing almost unimpeded, and a compensation balance corrects for temperature. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Movement
9 top-level lines as of r102484| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Plate & Pillar Set 2 parts | marine-chronometer-plate-set | 1× | 1 | 0 | assembly |
| 2 | Jewel Set | marine-chronometer-jewel-set | 1× | 1 | · | part |
| 3 | Mainspring Barrel | marine-chronometer-barrel | 1× | 1 | · | part |
| 4 | Coil Spring | coil-spring | 1× | 1 | · | part |
| 5 | Fusee 2 parts | marine-chronometer-fusee | 1× | 1 | 0 | assembly |
| 6 | Helical Gear Pair | gear-pair | 1× | 1 | · | part |
| 7 | Detent Escapement 3 parts | marine-chronometer-detent-escapement | 1× | 1 | 0 | assembly |
| 8 | Compensation Balance 3 parts | marine-chronometer-balance | 1× | 1 | 0 | assembly |
| 9 | Maintaining Power | marine-chronometer-maintaining-power | 1× | 1 | · | part |