ABC OF THE STEEL SQUARE 



53 



side is slotted to accommodate the heads of the 

 set-screws and to allow the slides to be fastened 

 at the desired points. The gauge is fastened to 



Fig. 28. 



any square and is useful for laying out stairs, 

 cutting in rafters, cutting bevels or other angles. 

 In marking off stairs with an 8-inch rise and an 



Fig. 29. 



11%-inch tread the gauge would be fastened at 

 8 inches on one end of the square and 11% 



