Definitions:
MODEL, DESCRIPTION | MOVEMENT / CALIBER | WINDING DIRECTION | TURNS PER DAY (TPD) |
---|---|---|---|
20002 | Chronograaf 7751 | CW | 800 |
20003 | Chronograaf 7751 | CW | 800 |
20004 | Chronograaf 7751 | CW | 800 |
20006 | Movement DD 9000 / ETA 2824 | Both | 650 |
20009/13 Steel | Chronometer TT651/2892-A2 | Both | 650 |
20010/14 Steel | Chronometer 9035/2892-A2 | Both | 650 |
20015/17 Gold | Chronometer TT651/2892-A2 | Both | 650 |
20016/18 Gold | Chronometer 9035/2892-A2 | Both | 650 |
20019/20/21/22/27/28 Steel | Chronograaf 7753 | CW | 800 |
20023/24/25/26/29/30 Gold | Chronograaf 7753 | CW | 800 |
If you could not find your watch model (or caliber) in this table, you may determine your VAN DER GANG 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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