Horse****.
"Brian" wrote in message
...
No, if you have a cylindrical grinder and are really pretty good using it,
you can make a reference square to a few tenths per foot. You'd be a
pretty
long time getting that on a lathe, and it would be by luck not skill in
the
end.

Brian

"CW" wrote in message
news:xka1b.165954$Oz4.43442@rwcrnsc54...

"nuk" wrote in message
...
Couple more questions:


1) how are the Incra Guaranteed squares as a 'reference' square? Any
others of similar design i.e. reference square that would be worth
investigating?

Couldn't say about the Incra, never seen one. If you have a metal lathe
and
the ability to use it well, a reference square can be made, accurate to
.0002-.0003 per foot, fairly easily. If you want to buy one, do a Google
search on "cylindrical square".


2) I've heard a bit o' rumbling here and there about the combo square
not being the best choice for a 'trusted' square due mainly to the
moving parts. Any comments in that department?

In theory, that is quite correct. In practice, a good combo square, well
maintained, will be more accurate than what you can get out of
woodworking
tools.


I've been eyeballing some Starrett equipment to go along w/ some
Mitutuoyo that I have for some other uses (digital calipers and
micrometers). Suggestions on places for the best prices?

Thanks,

nuk

--
I know more than enough *nix to do some very destructive things,
and not nearly enough to do very many useful things.