"Joseph Gwinn" wrote in message
...
In article ,
"DazFNQ" wrote:

Ha It gets better, in the Hare & Forbes brochure it says theat the
leadscrew
is metric, but another source of information for the same lathe says that
it
is an imperial leadscrew.

Have discovered that its pitch is 3mm and it has 8tpi (butress thread)

Can't be both. 8 tpi is (1/8)(25.4)= 3.175 mm pitch, not 3.000 mm pitch.

Thanks Joseph, it was late afternoon, little overcast (cloudy) and hard to
see.


It's close enough that a thread pitch gage may have difficulty
distinguishing unless one takes the leadscrew off the lathe.

Measuring a buttress thread with a "V form" thread gauge is slightly
imperfect.


Thanks once again DazFNQ