Any fellow Horologists out there?

[Razorfish]

Originally Posted by zippyt

-27 quartz jewels
Just curious how there can be 27 quartz jewels and not 28 , is both sides ( top and bottom) considered a full quartz movement ????

I believe this is caused by the jewel placed on the Arbor bearing (part of the winding mechanism of the main spring). Watches with more than arbor would have an even amount of jewels. Also, 27 jewels is a common number used in many watches, including the higher quality battery-powered ones. Its all based on the number of common friction points present in the watch movement.