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BELL SYSTEM TECHNICAL JOURNAL 



cases having fairly high reflection coefficients, such as Hght grey, is 

 also desirable for ease of vision. 



The location of the "reference" point is such that 71 per cent of the 

 total scale length is utilized as compared to only 42 per cent in former 

 instruments. This feature, combined with the use of a larger size 

 instrument, results in a useful scale more than 2.5 times the length of 

 former scales. 



Fig. 17 — New volume indicator — B scale. 



Although the reference point is no longer in the traditional vertical 

 or near-vertical position, it has been found that even those who have 

 long been accustomed to the old arrangement, soon discover the ad- 

 vantages of the new scale. This is attested, in the case of the broad- 

 casting application, by the general acceptance of this scale by the 

 personnel of a number of stations located in various sections of the 

 country. 



