PATTERN MAKING 



A still more convenient, but slightly more expensive, form 

 of adjustable try-square is shown in Fig. 52. It differs from that 

 shown in Fig. 51, in being self-contained, no screw-driver being 

 necessary for moving the blade or securing it in position, and also 

 because the blade can be removed entirely, and an extra blade, 



Pig. 52. 



shown in Fig. 53, substituted. The ends of this second blade give 

 both the hexagon and octagon angles, which is a matter of grsnt 

 convenience to the pattern maker. Fig. 53 shows the hexagon 

 end of the blade applied. Reverse the blade and the octagon end 

 will be in position for use. 



Fig. 53. 



To the above try-squares there should be added a carpenter's 

 steel square 24 inches X 18 inches, for use in laying out and 

 squaring up large stock and large patterns. 



