92 THE SERVICE CHARGE 



the service charge is not used in connection with a minimum 

 rate. 



Intermediate Sizes of Meters. There is a recent tendency 

 to make intermediate sizes of meters in small sizes, and special 

 types in large sizes which may have either greater or smaller 

 relative capacities than the ordinary ones. There are also 

 special kinds of large meters that have much less resistance. 



The question of adjusting service charges to such special 

 types of meters is obviously a difficult one. In principle, ser- 

 vice charges should be rated somewhat according to the capacity 

 of the meters; but on the other hand they must be rated along 

 simple general lines, and it would seem best in general to classify 

 special meters under that one of the classes used in this chapter 

 to which such meters most nearly approach. There may be 

 cases where an extra class will be necessary, but the need of 

 it should be clearly shown before extending the classification. 



The practical problem may be presented of what is to be 

 done with a meter called of a certain size but really having 

 the capacity of the next larger size or some approximation 

 thereto, The general adoption of the service charge plan would 

 offer some inducement to the taker if possible to find and use 

 such a meter. 



The best way of meeting this condition would seem to 

 be to establish some standard limit of capacity for each of 

 the various sizes, and if any particular type of meter exceeded 

 the limit set for that size, it would then be classified as of the 

 next larger size. No attempts will be made to set such standard 

 limits at this time, but the matter is suggested as one that may 

 have to be met by water works men as the business develops. 



