Technical sheet
The ex-Peseux ultra-thin: hand-wound, 2.50 mm, small seconds at 6.
Features
Going train
| Arbor | Wheel | Pinion | True speed |
|---|---|---|---|
| Mainspring barrel | 80 | — | 1 rev / 6.67 hours |
| Center wheel | 80 | 12 | 1 rev / hour |
| Third wheel | 75 | 10 | 8 rev / hour |
| Fourth (seconds) wheel | 84 | 10 | 1 rev / minute |
| Escape wheel | 15 | 7 | 12 rev / minute |
Disclaimer
An approximation of the ETA 7001 layout from public drawings and photographs, not a manufacturer-accurate replica. Manual winding, 21,600 vph (3 Hz), 17 jewels, Ø 23.30 mm (10½ lignes), 2.50 mm height, small seconds and the index regulator are published ETA figures; the small seconds at 6, the absence of hacking, Incabloc shock protection and the three-bridge construction come from Caliber Corner, Monochrome and Worn & Wound. Power reserve: 45 h typical per ETA; the press (Worn & Wound, Monochrome, Fratello) gives 42 h. Tooth counts, wheel sizes and the exact shapes and positions of bridges and parts are an approximation from Monochrome’s technical drawing and photographs; the tooth counts make the fourth wheel turn once a minute, as the small seconds requires. The dial-side parts are drawn at the explorer’s common scale, so the model is thicker than the real 2.50 mm, but the bridge-side stack is kept low. The escapement motion is a kinematic model, not a physics simulation.
Sources