The Story Of An Electric Meter c1922
"Shows the manufacture of electric meters, particularly the "H-type" alternating current meter, and some of their uses. Reels 1 & 2 consist of a tour through the Sangamo Electric Co., Springfield, Ill., showing how the "H-type" meter is made. Reel 3 shows the making of "D-5" and "N" direct current meters. Includes views of electrical transportation and industrial equipment using these and other types of meters."
National Archives Identifier: 12409