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View picture in original size
Fig. 1

Langendorf 1244

Features
manual-wind alarm
sweep second

Data
12.5''', Dm= 28.0mm
H= 5.5mm
17 jewels
f = 18000 A/h
power reserve 40h
alarm 12s

Balance staff U1469

Stem W1199

Mainspring / battery
Zf1052, 1.40 x 9.5 x 0.12 x 270mm

Hands
1.40 x 0.90mm

Comments about the data

Remarks
indicator aperture for alarm at 12h
operating completely with crown

generations:
1241: stem disengaged by screw
1243: stem disengaged by button
1244: minor modification of winding gear and train bridge

Operating Instruction
Winding watch and alarm: The movement has separate barrels for watch and alarm. They are wound as follows, when the crown is pushed in:
Watch: turn crown in 6h direction.
Alarm: turn crown in 12h direction.
Attention: A resistance in either direction indicates that the corresponding barrel is fully wound. In this case continue winding only in the other direction.
Set time: Pull crown completely and turn it in 6h direction.
Set alarm: Pull crown half out and turn it in 12h direction.
Alarm on: Turn crown a bit in 12h direction, until a colored spot appears in the indicator aperture.
Alarm off: Turn crown a bit in 6h direction, until the colored spot in the indicator aperture disappears.

Example, year: signature; shock device
ca. 1950: AXZ, Swiss Made
(Langendorf 1241)

Not for Sale!
The movements presented in this caliber finder are not for sale. This is only a data sheet for identification and evaluation of the movement calibre, as well as for approximate dating.

bidfun-db 21.3 © 02-08-15, mtr-Ranfft


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