Evaluation of the Healthways Model 1971 Capillary-Tube Depth Gauge.

摘要

The Healthways Diving Company submitted two model 1971 capillary-tube depth gauges to the Navy Experimental Diving Unit for test and evaluation. Although the tests proved the gauge to be accurate, they also disclosed a problem with the dial face. Inasmuch as the dial is secured with only one screw, there is a real danger of the dial turning if the screw loosens or if the rubber mounting case is compressed.