On Aug 13, 2012, at 6:36 PM, Keith Park <topnotch at nycap.rr.com> wrote: > Anybody else notice that the hash marks on the 100MPH S speedos (64-5 only) > don't line up with the MPH readings? What's different about the 64-65 S speedos compared to those used in the second half of the 60s? Soren