ETA 1170

 
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ETA 1170

Description

This is a very early ladies’ movement from ETA with center seconds. They are driven indirectly by a large second wheel, which has the exact size and tooth count, as the minute wheel below.

Unfortunately, this movement was not equipped with an Incabloc shock protecion, but with a pretty simple one, and so, the balance wheel is broken.

Technical data

Manufacturer:ETA
Caliber:1170
Number of jewels:21
Escapement:Pallet lever
Balance types: Nickel screw balance
Shock protection(s): Ruby-Shock
Balance bearing / direction hairspring:Counterclockwise
Moveable stud:no
Adjust mechanism:Long regulator arm
Construction:
  • lever
  • escape wheel, seconds wheel, third wheel
  • center minute wheel
  • mainspring barrel
Features:SCD
Functions:hour, minute, second
A/h:18000
Size:7 3/4'''
Literature: Flume: 1949 I 33