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AS 1187

 
AS 1187 |

AS 1187

Description

The AS 1187 is an old movement can be seen as the precessor of several modern movements, such as the caliber 1686.

Since it offers a directly driven center second hand and uses a large minute wheel, it had to be constructed in two layers, resulting in a large height.

With its screw balance, secured in an Incabloc-Shock protection system, with its large regulator arm and the yoke winding system on the dial side, it was a classically made movement.

AS 1187: AS 1187 Zifferblattseite

AS 1187 Zifferblattseite

Technical data

Manufacturer:AS
Caliber:1187
Size:10 1/2'''
A/h:18000
lift angle:52.23°
Number of jewels:7/15
Escapement:Pallet lever
Balance types:Nickel screw balance
Shock protection(s):Incabloc
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 (direct center seconds)
References:Flume: 1952 7
Hint: The jewel count, the types of balances used, and the shock protections employed refer only to the specimens held in the archive and are therefore not relevant for the precise identification of the movement.

Usage gallery

AS 1187: Musette Resist HAU

Musette Resist HAU

Links

Other movements from AS