32 



A B C OF THE STEEL SQUARE 



. ( . t < 1 1 1 1 r 1 1 1 1 1 1 1 1 1 



pany. This square has a blade three inches 

 wide, which is made with a slot down the center 

 one inch Avide. The tongue is the same as in the 

 No. 100 square, but has no figures for brace or 

 octagon rules. It is not so handy for general 



purposes as 

 the regular 

 square, but 

 for special 



purposes in bridge building, or for 

 laving out very heavy timber struc- 

 tures it has special advantages, as 8- 

 inch shoulders and 3-inch tenons and 

 mortises can be readily laid out with 

 it. Another square, shown in Fig. 15, 

 known as the "machinists' square," 

 is made by this company. It has a 

 blade 6 inches and a tongue 4 inches 

 long, and is very finely finished. This 

 square is found very useful for pat- 

 tern makers, piano and organ build- 

 ers, and where other especially clos 

 work is required. A number of other 

 squares are made by this firm, but 

 as they are not intended for woodworkers' use, 

 I will not describe them here. 



I would not complete this description of Sar- 

 gent's make of squares if I failed to make men- 



Fig. 15. 



