ENLARGING AND REDUCING PLANS 
triangle, pencil, etc. If the pantograph method is to be illustrated 
it will be necessary of course to have a pantograph; and a set of 
proportional dividers will be required in learning method 5 above. 
Fie. 12. PantoaraPpH 
Practice 
The student should redraw several maps and plans, reducing 
some, enlarging others. Plans in this book will serve admirably, 
as many of them will have to be redrawn by the pupil as the course 
proceeds. 
This practice need not be unduly protracted, since there will be 
many occasions for the further use of the methods here described, 
but the pupil should spend enough time in this work so that he 
can use several different methods readily. 
27 
