ETA 932

 
ETA 932

ETA 932

Description

The ETA 932, here in the enhanced version by Wyler, is a mens’ watch movement with a diameter of 11 12 lignes. It bases on the ETA 900 and adds an indirectly driven center second to it, while using a larger main plate.

Video on YouTube

ETA 932 “live”.

Video on YouTube

Same movement, this time in slow-motion

base plate

base plate

The main plate is stamped with “900”. It’s unknown, whether this is a reference of the ETA 900 or a Wyler-internal code.

The construction of this movement is strictly classical - The minute wheel is directly driven by the mainspring, and the fourth wheel at position “6” could carry the decentral second hand - but not on the ETA 932, where the third wheel drives the center second hand. To avoid a jumping second hand, a very flat spring is used at the bottom of the center second hand train.

Wyler Incaflex balance cage

Wyler Incaflex balance cage

The balance cage assures, that the Wyler Incaflex balance does not bend the thin axle on shocks.

Wyler Incaflex balance

Wyler Incaflex balance

Here you can see the very long slanted balance legs, which hold the balance ring elastically and absorb shocks. Because of this, the balance wheel is not shock protected.

ETA 932 dial side

ETA 932 dial side

On the dial side, you see the yoke winding system and the minute engravings. They were used to help adjusting raw movements, before timegraphers were invented at the mid of the last century.

Timegrapher result

The specimen tested here comes from a Wyler watch was is about 70 years old. It was recently cleaned and lubricated. On the timegrapher, this specimen showed acceptable results. The deviation on the vertical position were more or less negative, while on the horizontal position, there were a bit fast. Such a behaviour is quite normal, especially on movement, which were in use for many, many years.
crown right (12 up)

crown right (12 up)

crown up (3 up)

crown up (3 up)

crown left (6 up)

crown left (6 up)

crown down (9 up)

crown down (9 up)

dial up

dial up

dial down

dial down

Technical data

Manufacturer:ETA
Caliber:932
Number of jewels:17
Escapement:Pallet lever
Balance types: Nickel screw balance
Shock protection(s): Wyler Incaflex
Balance bearing / direction hairspring:Clockwise
Moveable stud:no
Adjust mechanism:Long regulator arm
Construction:
  • lever
  • escape wheel, seconds wheel, third wheel, center minute wheel
  • mainspring barrel
Construction type:solid construction
Winding mechanism:yoke winding system
Setting lever spring:3 hole(s)
Features:SCI
Functions:hour, minute, second
A/h:18000
Size:11 1/4''' (measured: 25,0mm)
Literature: Flume: 1958 32

Links