A B C OF THE STEEL SQUARE 



Through the center draw the lines AB and CD 

 parallel with the sides and at right angles to 

 each other. With a pair of compasses take .* 



Fig. 13. 



many spaces (6) from the scale as there are 

 inches in the width of the stick, and lay off this 

 space on either side of the point A, as Aa and 



