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| Joined: | Sun Sep 4th, 2005 |
| Location: | Akron, USA |
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Skip is the Man! very interesting read on a very cool movementcool10.gif
Skipdawg PM'ed with a link to an article on movements. In it was this description of the movement that is in the Graf Zeppelin. I had no idea it was an actual big date.
The new ETA 2826-2 big date calibre Thanks to the new ETA 2826-2, the exclusivity of a large date is now within reach for less expensive timepieces. It provides a date display almost twice as large as the vastly popular calibre 2824-2 movement with a display area of 3.7 mm x 2.8 mm. Two discs are fully superposed, the lower disc being imprinted with the numerals 1 to 16, while the upper disc carries the dates from the 17th to the 31st plus a window that allows the dates on the lower disc to be seen. Thus, from the 1st to the 16th day of a month, the window of the upper disc is congruent with the equal-sized aperture in the dial, revealing the current date on the lower disc. The transition from the 16th to the 17th day is performed by the upper disc which also advances by one interval for the 15 days that follow. After the 31st, the window in the upper date disc again lines up with the dial aperture, exposing the numeral 1 on the lower disc.This mechanism allows a logical date display in which the 1st automatically follows the 31st day. Moreover, double-digit dates appear without a gap. Unlike other solutions, the position of the big date on the dial is not fixed. It can be arranged in many different ways to accommodate signature dial configurations with brand-typical layouts.