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Gauge ETA 2892 A2

Any typos are as a result of direct translation of the original French. 

Presentation:
Gauge 111/2' ''
Diameter of 25,60 mm
3,60 mm height
Mechanical movement with automatic system of reassembly
Indication of the day of the month
Stem of winder with 3 positions (reassembly, put at the fast date, put per hour)
Alternances/heure of 28800
Angle of lifting of 51°

2892 côté mouvement
2892 côté cadran

Dimensioned movement (without the automatic block)

2892 sans bloc automatique

One can see the stop beam, which, to make the function is in relation to the running pinion.
As soon as one draws the stem from winder to make the setting per hour, the pinion running moves towards the center of the part and thus involves the stop beam which will rock and come to rest against the circumference of the beam.

Stop balancier

The automatic block seen of lower part

Separate mass of the block. One sees the auxiliary reverser on the top of the block.

la masse séparée du bloc

The open block with left on the right:

The intermediate gear of reduction
The wheel of reduction
The wheel of inversion
The auxiliary reverser
The reverser

bloc auto ouvert

Detail of the bridge of barrel (below), one can see of left on the right:

The wheel of crown
The intermediate wheel of crown
The intermediate ratchet
The entraineuse wheel of ratchet
In top, the pawl
Under the bridge, the plate of pawl

pont de barillet

Detail of the anchor, coils exhaust.

détail de l'ancre / roue d'échappement

The turned over beam

balancier

Dimensioned dial

2892 côté cadran

The fast corrector in action, when one is in the 2nd position of the stem and that one turns it to back to make the setting at the fast date.

correcteur rapide

The finger of the corrector of day of the month is in catch with the disc of day of the month to carry out the change of it.

correcteur de quantième

Large plan

gros plan correcteur de quantième
   
 

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