The ZIM 2608 is a quite old and unusual handwinding movement of russian
production, which was equipped with and direct center second and
therefor builds really high.
Additionally, the specimen shown here has got a very nice stripes decoration
on the plates, while elsewhere it looks pretty crude.
The caliber 2608 bases on the construction of the familiy relative
ZIM 2602. For the direct driven center
second, the fourth wheel was removed from position "6" and the third wheel
was set further distant from the center.
Since fourth and third wheel are now located above the winding plate,
the escapement wheel train had to be prolonged, which all leads to a very
high building movement.
Breguet hairspring
Like the ZIM 2602, this movement also uses a three leg ring balance
with a Breguet hairspring. The balance is not yet
shock protected and the hairspring key doesn't have a long regulator
arm. So, this movement was build cheap and expensive the same instance.
ineffective hairspring key
Pretty funny: The "watchmaker", who put hands last on this movement,
managed to set the hairspring key wrongly, without any
function, onto the balance cock.
empty main plate
The ZIM 2608 beats with 18000 alternations per hour and contains a pallet
lever.
dial side view
On the dial side, you see the yoke winding system besides the otherwise
quite empty plate.
Technical data
Manufacturer
ZIM
Caliber
2608
Number of jewels
17
Escapement
Anchor with pallets
Balance
Nickel
Shock protection(s)
none
Balance cock direction
clockwise
Hairspring stud
fixed
Regulator type
Breguet type hairspring, hairspring key
Movement construction
Fork Escapement wheel, Fourth wheel, Center wheel Center wheel, Mainspring barrel
