Are the 649x mov’ts and their clones just sloppy?

[meanoldmanning]

I’ve been screwing around with a few 6497s; one new 6497-1 elabore, one well used 6497-1 and a new Seagull clone.

 

The well used example had seen water at some point and showed wear on all the pivots, especially the pallet fork where the pivots are pitted and cone shaped. I also noted a ton of end and side shake in the barrel arbor in its ports and sort of wrote it off to the wear found elsewhere, but when I checked the other two mov’ts I noticed they had significant end and side shake in the arbor too. Do all of these just have loads of tolerance right from the get-go? I’ve read ETA allows a fairly large delta in positional variation so I’m guessing that is the case?

 

 

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