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Ronda 1013
Ligne: 18.5'''
Jewels: 11/15
Power Reserve: 35 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: 1907-1910
Diameter: 41.4 mm
Height: 5.0 mm
Hands: 1.82 x 1.15 / 0.21 mm
The Ronda 1013 watch movement is a pocket watch calibre manufactured by Junghans from 1907-1910. It is an open face calibre with a monometallic screw balance, equipped with a Breguet hairspring. The movement also features a brass lever and escape wheel. Notably, the balance with press-fit staff and riveted staff are completely interchangeable with the hairspring. The J8 movement allows for stem winding and setting, and includes a sub-second function.
The Ronda 1013 features the following functions:
- Stem wind and set
- Sub Second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 2.00 x 0.200 x 460 x 16.0 mm | GR5902 | Manual | Buy mainspring |
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