THE PROBLEM 



Develop a controlled-temperature tank and pressure 

 system for calibrating deep-sea reversing thermometers 

 and other precise temperature-measuring instruments. 

 This report covers improvements made to the system 

 during the last 10 years. 



RESULTS 



1. Improvements made to the Naval Undersea Warfare 

 Center Temperature Calibration Facility have enabled it to 

 furnish vital support to oceanographic research groups. 



2. The improvements have made possible the acquisi- 

 tion of more accurate data and the testing of more varied 

 types of temperature sensors. 



RECOMMENDATIONS 



1, utilize the facility for precise temperature calibra- 

 tions and for studies that require constant temperature. 



2. Continue development directed toward improving 

 the mechanical, electrical, and electronic components of 

 the facility. 



REVERSE SIDE BLANK 



