The Regulator, Spring Stud, and
Anti-Shock Mechanism




 

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The balance cock assembly of a Jaeger LeCoultre caliber 889 is shown in this
photograph. (1) The fine rate-adjustment screw. (2) The regulator with index (or curb) pin and boot. (3) The operative component of the fine adjustment regulator
know as a “Triovis” regulator. (4) The anti-shock unit for the upper balance pivot with a characteristic KIF-brand spring. (5) The stud for the outer attachment of
the balance spring with the small screw that holds the end of the spring.

* Click
here
for a schematic view of the regulator and balance cock.




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