A B C OF THE STEEL SQUARE 



BRACE RULES. 



It will now be in order to show how the square 

 can be used for getting the lengths and bevels 

 for braces of regular and irregular runs. If we 



Fig. 31. 



wish to lay out a brace having a three-foot run 

 on both post and beam, the matter is quite 

 simple, for we can take 12 inches on the tongue 

 and 12 inches on the blade and transfer this dis- 

 tance three times on a straight line and we have 



