On 2009-05-11, Jim In FL wrote:

Problem is, can I justify $60-100 for a precision square. Not a rich man
here......

I don't know where you've been shopping, but a machinist/engineer square can
be had for under $20. Besides, you're paying for a level of accuracy far
outside what you'll ever be able to attain in wood. You'd be better off
with a good machinist combination square, which is still more accurate
than you need. More useful, too.

Check this out:

http://tinyurl.com/p8cc7w

nb