A B C OF THE STEEL SQUARE 



67 



Fig. 39, octagon jack. As the octagon miter 

 level surface is 5 and 12, it must raise same 



Fig. 39. 



as common jack, and is, therefore, raised to 

 length, or 14%, and 5 cut on length. 



HIP 



rig. 40. 



Fig. 40, hip rafter, is also length and run, 

 cut on length. 



Fig. 41. To bevel top of hip take length and 

 rise and mark on ris/-. 



