Show us your sector dials

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The pizza slices are not sectors as i see them on watch dials. The sectors on watch dials cut up the hour ring - in different ways - and have a ( semi) circle ring on the inside of the numerals and there is usualy a minute ring ( rail road track ) on the outside of the minutes.

First patented dial ;

Longines Stern Freres Sector dial depose_Pagina_1.jpg

most known in a watch from Patek Philippe, Laurent Ferrier and your CK 859. Here are some more examples also showing a busier version often reffered to as "scientific" dial ;

https://revolutionwatch.com/the-watch-face-sector-dials/

The Watch Face: Sector Dials - Revolution Watch
 
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Thanks, but I remain confused. In your previous graphics you labeled the one of the right as having "two sectors", yet you highlighted two rings, which you argue are not sectors. Where are the two sectors located?

In that figure there are two illustrations of the same dial. On the left, the 12 sectors that I see are colored. On the right, I attempted to color the 2 sectors that I inferred you would see. (I don't think the dial has 2 sectors, but the snippet quoted suggests that you would.) The point of the graphic was to illustrate the different perspectives. Not saying either perspective is wrong or right, just different.

I appreciate your graphic above, and am able to follow the logic. Though by that definition, many that are widely considered to be "sector" dials would not fit the definition. In fact, it would seem to me that only two of the five of the ones posted above by @OllieOnTheRocks would fit the definition (the last two, by virtue of the crosshairs). Would you agree with that?

I don't think there's a hard and fast rule, but I think you could make the case for all five of them being sector dials, though some are more obvious than others.

Also, I'm unclear as to how the one on the right that you posted ("Branch") would technically fit the bill. There is an interior ring which features extended indices, and yes, they divide that ring into sectors, but is it not typical of the dividing lines to also extend to the second/minute track? Does this one fit your criteria, simply by virtue of the extended indices? And if so, would a certain thickness required to qualify?

I guess I wouldn't be too picky about where the extended indices are placed. To me, it's enough that the dial makes some attempt to emphasize the indices and (in the spirit of a radius) makes some gesture toward extending them to the dial center. So I wouldn't consider the Railmaster posted earlier to have a sector dial at all; the indices don't really suggest radii since they don't have a sense of continuing towards the dial center; rather they end at their points. Conversely I would count 4 sectors in the Omega pocket watch (emphasized indices at 3, 6, 9, and 12) and either 8 or 12 sectors in the Branch wrist watch (depending on whether or not you wanted to count the implied indices at 3, 6, 9, and 12.) The VC pocket watch, to me, would be the same. (Man, that's a gorgeous pocket watch, too.)
 
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I know this thread is about sector dials but man - the lugs on that zenith! :thumbsup:

yeah, they are pretty sweet!
 
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A few
In my opinion I wouldn’t call any of those sector dials apart from the aqua dive :whistling: oh and the subdial on the gold dialed omega is a sector sub dial, so does that make the watch a sector dial?
 
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In my opinion I wouldn’t call any of those sector dials apart from the aqua dive :whistling: oh and the subdial on the gold dialed omega is a sector sub dial, so does that make the watch a sector dial?
Dunno, the Aqua was a certainty for me, the rest less so
 
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A sector dial is defined primarily by its concentric composition, meaning that the design of the dial is formed by the relationship between two circles of differing sizes which share the same axis.
https://www.thehourglass.com/au/specialist-picks/sector-dials-from-switzerland/#:~:text=A sector dial is defined,which share the same axis.
I find this definition to be too broad. If you look at all of the dials shown in the article, barring the Rexhep Rexhepi, you will find linear hour markers. I think that the presence and nature of such hour markers is also of primary importance when defining a sector dial.
 
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