All non-signature models, being American;Standard, Deluxe, are essentially 18mm. RBV are 19mm.
Mexican and Squire V's : 18mm.
I've owned all of these and swapped pickups between them. The pole pieces line up under the strings where they should on all models give or take .5 mm.
Lots of data on this in other threads.
edit: Hipshot A style model, the FM-3 is a retrofit for the Fender 5 bolt on bridge. So if you have a Fender MIM V and want more flexibility, or a Squire for that matter, this bridge is a worthy upgrade.
Last edited by Doug Parent : 12-08-2012 at 06:54 AM.