Quoting Tim O'Connor <timoconnor@...>:


last night I saw someone using a

speedometer to fine tune the settings on a DCC equipped engine. This is
a commercial device that straddles the rail and has a digital readout
of
the HO scale miles per hour down to 1/10's of SMPH. I gotta get me one
of them! :o)

O.K., I'll bite. Where does one find such an animal? Sounds like just the
thing for those who claim some ridiculously fast model speeds are actually to
scale!

Take care, Don Valentine