NUWC TP 25 

 COPY 



nuwc 



A PORTABLE, GENERAL-PURPOSE UNDERWATER SOUND 



MEASURING SYSTEM 



By M. A. Calderon and G. M. Wenz 

 December, 1967 



Listening Division 

 San Diego, California 



1 DISTRIBUTION STATEMENT 



Q A THIS DOCUMENT HAS BEEN APPROVED FOR PUBLIC RELEASE AND SALE; 



^^ ITS DISTRIBUTION IS UNLIMITED. 



mM ■ — 



IU1 



