ABC OF THE STEEL SQUARE 



19 



If the run is 21 inches on both beam and post, 

 then the brace will be 29 70-100 inches. 



Care of Square. Never use emery or sand 

 paper on nickel or black finished squares. When 

 through using put on a few drops of oil. Do 

 not put your square away with finger marks on 

 it; nothing rusts it so quickly as perspiration." 



Fig. 2. 



It will be seen that these squares adapt them- 

 selves to other work as well as to framing, a 

 quality very few of the combination squares ^* 

 Kess, and while combination squares have their 

 special uses and should be in the tool chest of 



