The original use for a double square was for metalworking. Unlike the
combination square, the double square can be clamped in a machine vise.
"toolmiser" wrote in message
...

I've read a lot of posts here recently about "double squares", and I've
never been able to figure out the advantages of one of these over a
combination square. I have both (bought used at garage sales). I have
always felt I was missing some use of the double square that would make
my world more enjoyable. It is like having something valuable, but not
knowing what the value is.

Thanks for your comments!


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toolmiser