10 1/2”’ | Hand Wind | Swiss Lever | Indirect Sweeping Seconds |

Remarks:

• Movement family:
  • Ruhla UMF 2: small seconds
  • Ruhla UMF 2c: indirect sweeping seconds

• Listing ID: 10983
• Manufacturer / Brand: Ruhla UMF
• Caliber: 2c / M2c
• Size in French Lignes: 10 1/2'''
• Size range mm largest diameter: 22 - 31 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: Crown
• Seconds Hand: Sweeping seconds (central seconds)
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 16
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Antichoc 102
• Beats per hour: 18,000
• Balance Type: Nickel
• Power Reserve: Approx. 40 hours
• Production Period: 1948-1963 (including predecessors Thiel/UMF Präzisa)
• Identification: Dial side marked with UMF 2. Listed in the Flume 1 catalog in the part from 1952 as Thiel 2.
• Country: Germany
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)