ORDINARY RATES OF OUTPUT 



113 



but for practical purposes it may not be much in error, because 

 there are bound to be as many larger meters coming under any 

 given limit as there are smaller meters exceeding it. There 

 will be some variations both ways, but in the aggregate these 

 will balance. 

 The limits that were found were as follows: 



Examined in this way, it appears that the normal maximum 

 output for one f -inch meter (data for 1 1 systems) is 705 gallons 

 per day. In other words, averaged by systems there are as many 

 f-inch meters as there are services from which less than 705 

 gallons per day are drawn. The average output from all the 

 f-inch meters is considerably less than this. Averaged by 

 systems, it seems to be about 116 gallons per day. The 705 

 gallons per day, or 8600 cubic feet per quarter, is the normal max- 

 imum limit for output of a meter of this size. 



Different systems vary rather widely in the maximum limits 

 for f-inch meters, quantities ranging from 220 to 1370 gallons 

 daily being found. This difference is to be attributed principally 

 to the divergence in practice with reference to the use of f-inch 

 meters on the larger domestic services. 



The classification of quantities is not available for some of 

 the systems using the largest proportion of f-inch meters, and, 

 if these statistics were available and were included, it is probable 

 that it would lower considerably the average limit for the 

 f-inch meter probably to between 300 and 400 gallons daily. 

 There is a similar but less marked variation at the line between 

 the ij-inch and the 2 -inch meters. 



