COMPUTATION AND OFFICE WORK 



41 



page 35 is given in the table, and below is a diagram 

 showing the method of plotting. 



It is not, however, the most common practice to plot a 

 survey after this fashion. The more usual way is to 

 plot the angles and distances directly from the notes. To 

 do this select a point on the paper for the initial point of 

 the survey and draw a meridian through it in pencil. Then 

 by means of a protractor mark the bearing of the first 



FIG. 1 



FIG. 2 



METHODS OP PLOTTING A SURVEY. 

 FIG. 1 BY LATITUDES AND DEPARTURES. FIG. 2 BY COURSES AND DISTANCES. 



course and draw a line of indefinite length through it. On 

 this line lay off to scale the length of the course, thus 



