ELECTRICITY METERS 523 



The General Electric M-2 Demand Indicator. Fig. 310 shows 

 the M-2 demand indicator made by the General Electric Co. for 



Armature 



B 

 FIG. 310. Gonoral Electric Co. M-2 demand indicator. 



use in conjunction with a watt-hour-meter. Referring to the 

 diagram, which is for the instrument used on alternating-current 



