View of a technician at the Naval Air Material Center's Aeronautical Materials Laboratory using an unidentified apparatus to create a constant humidity condition in order to evaluate experimental humidity indicators. At…

General view of machinery used to conduct endurance tests of high-temperature (400 degrees Fahrenheit), high-pressure (3000psi) aircraft hydraulic pump at the Naval Air Material Center's Aeronautical Materials…

General view of technicians conducting tensile tests on new aircraft alloys at the Naval Air Material Center's Aeronautical Materials Laboratory. In tensile, or tension, testing, tensile machines are used to subject…

General view of a technician making notes regarding the testing of panels coated with preservative oils after exposure in an experimental humidity cabinet at the Naval Air Material Center's Aeronautical Materials…

General view of the Dynamic Test Laboratory at the Naval Air Experimental Station showing forced vibration machines and other equipment used to test rubber articles produced at the Station under simulated service…

General view of the Goodrich Flexometer used in the Naval Air Experimental Station's Dynamic Test Laboratory. The flexometer was used to determine the heat build-up and hysteresis characteristics of rubber specimens…

General view of the Weathering Room at the Naval Air Experimental Station. Visible in the photograph is an Atlas Fade-o-meter and several accelerated weathering units used to evaluate the effects of stimulated service…

General view of an electronically-controlled constant rate of load tensile machine used in the Naval Air Experimental Station's Physical Properties Laboratory. Tensile machines are commonly used to subject materials…

Plastometers, resiliometers, and other apparatus used to evaluate rubber and rubber-like materials in the Naval Air Experimental Station's Physical Properties Laboratory. The instruments visible in the photograph are…