Is this common? If so, where? Spotted in an Olympic chronograph at the Omega museum - a movement with a helical spring used in tension, upper center. ...
I'm always interested in oddities / singularities - when one person does something differently than (apparently) everyone else. I assume that others use regular leaf springs pressing against the outer surfaces that are connected in these two cases by a he...
Picture from "The Naked Watchmaker" deconstruction of the 7750 with split seconds. BTW the original image you provided of the pocket watch is using the helical spring in the same sub-system of the watch - to pull two arms together when resetting one of th...
I’ve seen this in other split second pocket watches, always on the tongs, but never in other movements. There was a brief attempt at helical mainsprings in the 19 th c, but it died fast. A
MB&F, JLC, and a few others are still making watches with helical hairsprings AN ARTICLE ABOUT FIVE WATCHES Sold individually Available in 10 different diameters Fits 2.0mm, 2.5mm, 2.7mm, 3.5mm and 3.8mm case hole openings Many different shapes and styles...