MEASUREMENTS 



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Special measures. The following special measures are 

 in use : 



Miners' inch. For the measurement of water flowing in 

 streams and ditches in the western part of the United States, 

 the term miners' inch was used in irrigation and hydraulic 

 mining and the terms gallon and cubic foot were used in the 

 central and eastern part. Owing to the fact that the use 

 of the gallon and the cubic foot for expressing volume of 

 water often necessitates the use of many figures, and the 

 miners' inch does not mean the same in different states, two 

 other units of liquid measure have been developed and are 

 now universally accepted over the entire country. 



FlG. 5. Standard wire gauge, full size 



