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ETA 361

 

ETA 361ETA 361

Description

The ETA 361 is an old movement, which was still constructed like a pocketwatch movement, but already uses a pallet anchor escapement.

The balance is not shock protected but of course contains screws and on the balance cock, there's a long regulator arm to adjust the effective length of the hairspring. Below the balance, the caliber number 361 is stamped.

Unlike modern movements, the escapement wheel, which is located deeply in the main plate, has also got an own cock; the other gears, fourth, third and second wheel are located under an own bridge and are partially beared in synthetic rubis. Their total number is 15, which was the maximum at that time.

An interesting detail is the small mainspring gear. Probably its tiny diameter is due to the fact, that it runs on the same level as the train bridge next to it, reducing the height of the movement.

On the dial side, there's the old "ETA" marking and a yoke winding system, so at least from this side, it already looks like a modern movement.

ETA 361 dial sideETA 361 dial side

 

 

 Technical data

ManufacturerETA
Caliber361
Number of jewels15
EscapementAnchor with pallets
BalanceNickel screw balance
Shock protection(s)none
Balance cock directionclockwise
Hairspring studfixed
Regulator typeLong regulator arm
Movement constructionFork
Escapement wheel
Fourth wheel, Third wheel, Center wheel
Mainspring barrel
Winding mechanismyoke
Setting lever spring3 holes
Functions,M
Beats per hour18000
Size81/2'''
Image in Flume Werksucher 1947 21
ETA 361ETAETA3618 1/2''''''ETA 36115 Jewels, 8 1/2'''''', 18000 A/h
Factsheet

 

 

Usage gallery

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