ABC OF THE STEEL SQUARE Zt 



off seven spaces from c, tf, g, which equals 70- 

 1 00 of an inch ; then count up the diagonal line 

 until the sixth horizontal line, e, is reached, 

 when e f will equal the required distance of 

 76-100 of an inch, which is a trifle over ^4 f an 

 inch. 



H.. .^-.. TJ .^. p 



Fig. G. 



Quoting from the table of directions given in 

 Sargent's circular describing this square, we 

 have, for rafter cuts, the following explanation : 

 "This run of a rafter set up in place is the 

 horizontal measure from the extreme end of the 

 foot to a plumb-line from the ridge end from A 

 to B, Fig. 6. 



M 4--f7-*IO-- ---' 



Fig. 7. 



"The rise is the distance from the top of the 

 ridge end of the rafter to the level of the foot. 

 From C to D, Fig. 7. 



