STANDARD VOLUME INDICATOR AND REFERENCE LEVEL 137 



indicators will be sufificiently impressed by the merits of the new 

 instrument and by the desirability of standardization in this field, to 

 join in its adoption. The new standards are being submitted to the 

 standards committees of the various national organizations for 

 adoption. 



Many people contributed to the development which has been de- 

 scribed. In particular the authors wish to express their appreciation 

 to Messrs. Robert A. Bradley of the Columbia Broadcasting System, 

 George J\I. Nixon of the National Broadcasting Company, and S. 

 Brand and Iden Kerney of the Bell Telephone Laboratories, for their 

 important share in the work, and to the Weston Electrical Instrument 

 Corporation for its valued cooperation. 



