Horological Meandering

This section of the museum shows how spiral springs were made by Junghans. Since it is quite technical, I will simply add the descriptions by the museum. Wire drawing - explanation see below Wire rolling Coiling rolling, turning and sawing Riveting Manual...  

Watch wise for sure not to be compared to the museums in Switzerland, but it is interesting in its own right. Stefan

In house balance springs are for a watch enthusiast one the most important thing, a reason to buy a watch. Thank you for the reminder of Junghans glory days.

It is not mentioned, but in the back there are some displays of various watch related suppliers from the region, and one of them is Carl Haas. It still exists and it is also based in the same small town of Schramberg Stefan

It looks like that Carl Hass has supplied the balance springs in the past to Junghans. Carl Haas and Junghans are now under the roof of the same company but I did not find a source saying that Junghans is using springs from Carl Hass. Can you tell more ab... 

I noticed the same as you - same owner for Junghans and Carl Haas. I noticed that a few years back Junghans produced some high-end limited editions with what seems own movements (not sure they were developed inhouse or based on another movement) . I presu...  

The spring is blue and comes with a Breguet overcoil finish. The movement J330 uses in "important areas" inhouse parts, like the balance wheel and this elusive balance spring. Thank you for your input. Best Moritz

I think those calibres are rare, I have never come across one. Best Stefan