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RGM winding parameters
Definitions:
- «CW» - Clockwise winding direction;
- «CCW» - Counterclockwise winding direction;
- «Both» - Combined mode (Clockwise + Counterclockwise);
- «–» - Undefined;
| MODEL, DESCRIPTION | MOVEMENT / CALIBER | WINDING DIRECTION | TURNS PER DAY (TPD) |
|---|---|---|---|
| Alarm: 110A | Modified AS 5008 | CW | 800 |
| Chronograph: 109E | ModifiedValjoux 7750 | CW | 800 |
| Chronograph: 400 | RGM / ETA Valgranges | CW | 800 |
| Classic Automatic: 151E, 151EB | RGM / ETA 2892-A2 | Both | 650 |
| Classic Automatic Copper Face | Modified ETA 2892-A2 | Both | 650 |
| Classic Aviator: 250 | RGM / ETA Valgranges | CW | 800 |
| Classic GMT Big Date Guilloche Automatic: 350E | RGM Modified | Both | 650 |
| Classic Grande Guilloche Automatic: 250E | RGM / ETA Valgranges | CW | 800 |
| Coin Impression USS Constellation Ltd. Ed.: 170 | Modified ETA 2892-A2 | Both | 650 |
| HMS Victory Ltd Ed: 200 | RGM / ETA Valgranges | CW | 800 |
| Lancaster Chronograph: 155 | ModifiedValjoux 7750 | CW | 800 |
| Left-Handed Calendar Chronograph w/Moonphase: 160 / 180 | RGM / Valjoux 7751 | CW | 800 |
| Moonphase Chronograph: 111M | ModifiedValjoux 7751 | CW | 800 |
| Moonphase Chronograph Full Calendar: 160 | ModifiedValjoux 7751 | CW | 800 |
| Pilot's Chronograph: 109 | ModifiedValjoux 7750 | CW | 800 |
| Pilot's Automatic: 107, 107bp | Modified ETA 2892-A2 | Both | 650 |
| Pilot's Military Automatic: 107m | Modified ETA 2892-A2 | Both | 650 |
| Professional Automatic Pilots: 151 | RGM / ETA 2892-A2 | Both | 650 |
| Professional Automatic Pilots: 151P | RGM / ETA 2892-A2 | Both | 650 |
| Professional Diver LE: 300 | RGM / ETA 2892-A2 | Both | 650 |
| Professional North Pointer GMT: 254 | RGM / ETA 2893 | Both | 650 |
If you could not find your watch model (or caliber) in this table, you may determine your RGM winding mode on a trial basis. You should select the combined winding mode (CW+CCW) and the minimal number of turns per day (TPD). Then place your watch into the winder and check after a few days how accurate your watch shows the time. If it runs behind, it is necessary to increase the number of TPD by one step.
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