Wheel 'height'?

[Simeon]

Just checking terminology here. When a pivot is described as having a certain height is that measured from pivot tip to pivot tip or from the face of the wheel to the tip of the extended pivot?

I have a bit of a strange one that measures closer from tip to tip but not from the wheel face to tip (I get 3.1mm from face to tip and about 3.6mm tip to tip when badly measured with my Vernier calipers)    

 

 

 

[AndyGSi]

Can you confirm the movement number you're working on.

[Simeon]

1 minute ago, AndyGSi said:

Can you confirm the movement number you're working on.

That's just it. I am actually looking to see if I can replace the second wheel on a Omega 3220 which uses the ETA 2892-A2 as it's base. The 3220 actually has a push fit chronograph driving wheel on the pivot rather than a second hand. Not certain that this would be a direct replacement but it could be worth a shot versus paying $150AUD for the Omega part. 

[AndyGSi]

I can't even see the 3.55 you've shown when I search Cousins for the 2892-A2?

[Simeon]

It's this one, though weirdly the part code on the link ends 'h315' rather than the 'h355' it actually says on the site, tying in with the height of 3.55mm

 

https://www.cousinsuk.com/product/eta-2892a2?code=ETA2892A2242H315#

 

https://www.cousinsuk.com/product/eta-2892a2?code=ETA2892A2242H315#

I note that dimension 'C' is given as pivot end to pivot end. 

[AndyGSi]

The part you've linked above is the 242 canon pinion.

the 227 3.55 high is on Cousins as you've shown but isn't listed when you do a parts search for the 2892.A2

If you're measuring 3.6 then I think this would be the correct one as your original post.