How to square a combination square

combination square

Combination square set, consisting of ruler, 4...

Combination square set, consisting of ruler, 45 deg square (left), protractor (middle), center square (right) EspaƱol: Componentes de un goniĆ³metro (Photo credit: Wikipedia)

 

Butt the square up against your straight edge and strike a line. Flip the square over and strike another line starting in the same place as the first. If your two lines diverge then your square is not square.
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Posted on May 12, 2013 in Cool Stuff, HowTo

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