Stephen York Wrote:

>So is there any way to fix squares that are not? I figure that the adjustable
>combination sqaures are not fixable, but I was wondering about an old type
>square with a blade attached to a handle with 3 pins.

One method is to file/lap the blade until it's square. Not an easy task 
if you are trying for the gnats .... other end.

>
>And while I got your attention, how would one check if a 45 degree angle 
>from a combination square is correct?

Mark off two 45s, you should end up with a 90. The real problem, however, 
is all the combination squares I've ever owned are square one time, off 
the next. I guess it all in the wrist when you set 'em.

Wm. "Bill" Brady, Harwood MD - Here's hoping that you stay on a happy 
plane.