Actually they were probably bad to begin with. But I am getting ahead of my
story.

I was busy making a shooting board this weekend (cannot afford a 51/52),
based on one in the back of Watson's book on Handtools. Before mounting
the strips which hold the stock at 90 degrees, I started checking all
my squares for a true 90, by putting them on a straight board, scratching
a line, flipping the square and making another line.

I was appalled when I found that the squares I had been trusting to be
correct were *WAY* out of square. This includes a machinists square from
a well known mail order company that has *NEVER* been dropped or mistreated
in any way.

The funny thing was that the only square that I own that is right on the money
is an old Fulton square I pulled out of my Dad's garage. We used that thing
on several houses we built, and several more house rehabs. It has bounced
around in a toolbox for God knows how long.

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.

And while I got your attention, how would one check if a 45 degree angle 
from a combination square is correct? My high school geometry is getting 
fuzzy nowadays. I gotta get those 45 degree shooting rails right too!

Thanks in advance!

	Steve 

BTW - For those who gave me advice on Epoxy, the SystemThree trial kit
for 10 dollars was great. The repair went well, and I saved that plane!
Tnanks for the good advice!