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					Originally Posted by Guppy  What’s it measure ? Two little marks after the 15…… you’re fired….. | 
	
 
Ive seen guys hold rafter stock up and draw cuts instead of learning to use the tables on a framing square.... and most never heard of Pythagorian theorem. Cutting stair stringers is another task those without math skills fail miserably at. Reading a ruler can be a big challenge for the poorly educated.