So you wouldn’t be happy with my 1950s Seamaster bumper automatic that keeps tome to around 3-4 secs/ day but doesn’t meet COSC? I think you’re confusing a watch that keeps time to within a few secs/...
Type: Posts; User: walkerwek1958
So you wouldn’t be happy with my 1950s Seamaster bumper automatic that keeps tome to around 3-4 secs/ day but doesn’t meet COSC? I think you’re confusing a watch that keeps time to within a few secs/...
Whether a watch us COSC rated or not, it must be regulated correctly.
But a watch that's not COSC-rated can usually be regulated to run at +6 secs/day or better. It still doesn`t meet COSC requirements but in everyday use it'll be acceptable.
Another factor is how well the balance is poised, I’m convinced this makes a very significant difference.
I’m not brave enough to try adjusting pallet stone depths, but closing up the curb pins...