Standardizing Electrical Instruments

Abstract

IN a paper read on December 3 in London before the Institution of Electrical Engineers, Lieut.-Col. K. Edgcumbe dealt with the standardization of industrial electrical instruments from the aspects of performance limits, dimensional limits and certain constructional features facilitating interchangeability and promoting commercial manufacture, and other minor matters such as preferred terms, definitions, symbols, etc. Comparisons are made of the standards issued in Great Britain, the United States and Germany and by the International Electrotechnical Commission, suggestions being put forward for the extension or amendment of the pertinent specifications issued by the British Standards Institution, notably BS8I, BS89 and BS90.