iSoi 





PRESSURE VESSEL 



FOR CALIBRATING SONAR TRANSDUCERS 



Acoustically transparent fiber glass capsule 

 permits testing at pressures to 800 psig 



C. E. Green • Research and Development Report • 26 July 1965 



U. S. NAVY ELECTRONICS LABORATORY, SAN DIEGO, CALIFORNIA 92152 • A BUREAU OF SHIPS LABORATORY 



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