AR1146 Amplitude Question

Jimbo85281

Member
Sherpa
What is the optimal amplitude for an ar1146 when serviced? The one I'm looking at is running in the 240's. Would that indicate that it needs service necessarily?
 

Superdive

New member
Sherpa
The AR1146 has many common parts with the AR1145. I had my Super Dive (AR1145) serviced a couple of years ago and it has an amplitude between 240 and 276 depending on orientation. It keeps very good time.

Be aware that parts for these movements can be hard to come by so if you're in any doubt get it serviced before you wear anything out. A good watchmaker will take the back off and inspect the jewels for signs of oil, not just look at the amplitude or beat error.
 
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