Grand Tonneau
ATLANTIC
Watch Winding Specifications
In 1888 Eduard Kummer founded in Bettlach, Solothurn, near Grenchen, a watch factory under the name "EKB" (Eduard Kummer Bettlach) for the manufacture of pocket watches. Initially the firm employed 20 watchmakers, but early in the new century, the number of employees rose up to 720 workers.
In the 1920's "EKB" was one of the first producers of waterproof wristwatches. For this reason, the name EKB was altered to Atlantic.
| Watch Model | Direction | Turns Per Day (TPD) |
|
|
Both |
650 |
|
Mariner Barrel |
Both |
650 |
|
Mariner Chronographs |
CW |
800 |
|
Mariner Classic |
Both |
650 |
|
Mariner Square |
Both |
650 |
|
Regatta Start Chronographs |
CW |
800 |
|
Seacrest 35 |
Both |
650 |
|
Seacrest 38 |
Both |
650 |
|
Seacrest Automatic |
Both |
650 |
|
Seahunter 50 Automatic |
Both |
650 |
|
Seaport |
Both |
650 |
|
Seashark Automatic |
Both |
650 |
|
Seashore |
Both |
650 |
|
Seawave |
Both |
650 |
|
Skipper |
Both |
650 |
|
Skipper Regatta Chronographs |
CW |
800 |
|
Worldmaster 2 |
Both |
650 |
|
Worldmaster 1888 |
Both |
650 |
|
Worldmaster 1888 w/small seconds |
Both |
650 |
|
Worldmaster 1888 Reserve de Marche |
Both |
650 |
|
Worldmaster Art Deco Auto |
Both |
650 |
|
Worldmaster Classic Automatic |
Both |
650 |
|
Worldmaster Chronograph Valjoux |
CW |
800 |
|
Worldmaster Chronograph 2012 |
CW |
800 |
|
Worldmaster Chronometer Automatic COSC |
Both |
650 |
|
Worldmaster GMT |
Both |
650 |
|
Worldmaster MarSq |
Both |
650 |
|
Worldmaster Mechanical |
Both |
650 |
|
Worldmaster Square |
Both |
650 |
If ever you are unable to find your watch model in this table, here's an easy way to determine the winding requirements for your ATLANTIC watches.
- Select the combined winding mode (CW+CCW) and the minimal number of turns per day (TPD).
- 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 increment.
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