Ruhla UMF 24-42

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10 3/4”’ | Hand Wind | Pin Lever | Indirect Sweeping Seconds |

Remarks:

  • Rocking bar winding
  • Click on the dial side
  • Motifications during production:
    • 1966: three-armed spring on regulator
    • 1975: movable instead of fixed hairspring stud-holder, and other small modifications
    • 1976: rocking bar made of plastic
  • Movement family:
    • Ruhla UMF 24-24: 0 jewels, dot display (transparent discs instead of hands)
    • Ruhla UMF 24-26: 0 jewels, child’s watch with moving eyes
    • Ruhla UMF 24-30: 0 jewels, no seconds
    • Ruhla UMF 24-31: 0 jewels, small seconds
    • Ruhla UMF 24-32: 0 jewels, indirect sweeping seconds
    • Ruhla UMF 24-33: 0 jewels, indirect sweeping seconds, date
    • Ruhla UMF 24-34: 0 jewels, digital display, bigger base plate
    • Ruhla UMF 24-35: 0 jewels, indirect sweeping seconds with stop mechanism
    • Ruhla UMF 24-36: 0 jewels, digital display
    • Ruhla UMF 24-39: 0 jewels, traveling miniature alarm clock (Midimatic, Sumatic)
    • Ruhla UMF 24-41: 2 jewels, small seconds
    • Ruhla UMF 24-42: 2 jewels, indirect sweeping seconds

 

  • Listing ID: 10611
  • Manufacturer / Brand: Ruhla UMF
  • Caliber: 24-42
  • Size in French Lignes: 10 3/4''' (10 1/2''' according to the manufacturer)
  • Size range mm largest diameter: 22 - 31 mm
  • Shape: Round
  • Winding: Manual (Crown)
  • Hands Setting: Crown
  • Seconds Hand: Sweeping seconds (central seconds)
  • Escapement: Pin Lever
  • Date, Day, Month...: None
  • Jewels: 2
  • Setting Lever Screw/Pin Position: Left
  • Balance Position: Bottom (120 - 240°)
  • Shock Protection: None
  • Beats per hour: 18,000
  • Balance Type: Nickel
  • Power Reserve: Approx. 36 hours
  • Production Period: 1963 - 1990 (whole movement family)
  • Identification: Original datasheet available. Listed in the Flume K3 catalog from 1972.
  • Country: Germany
  • Contributor ©: Uhrforum.de member Badener (Andreas Kelz)

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