> Mark Dapoz <md@xxxxxxxxxxxx> wrote:
>
> Yes, the lenses should have the Royal Microscope Thread (aka, the
> Royal Screw)
> threading. I just checked one of mine and it has an outer diameter
> of .794"
> and the thread pitch is 36NF (national fine). That works out to
> 1/36" for
> the pitch, which would be 0.027778.
>
Are these sizes converted from metric, seems like the numbers are pretty weird
for imperial ? Is RMS a metric standard ?
Wayne Harridge
http://members.optusnet.com.au/~w_harridge
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