Re: TR3 Speedometer & Tach

[David Massey <105671.471@compuserve.com>]

Message text written by Randall
>I just double-checked a TR3 ammeter, and a flat-glass TR4 oil gauge,
they are definitely not quite 36 tpi.  I still believe they are 3 BA
(which my chart gives as .1614" major diameter, 34.8 tpi).
<

Which works out to be .729 mm pitch.

Dave

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