MENSURATION AND SURVEYING 



27 



same for (2) and (3) : the distance between the stations is 

 also to be measured. These observations are entered in 

 columns in the book as follows : — 



'-' Thus there is a fall of 2'35 feet from (3) to (1) (distance, 

 478 feet) or 5'9 inches nearly in 100 feet. 



