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Subject Quality control Remove constraint Subject: Quality control

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    • 1948-Feb

    General view of several rows of Plexiglas panels positioned on racks. Per notations accompanying the photograph, the panels are set up for an outdoor exposure test designed to demonstrate the weathering capabilities of…

    • 1970s

    Two views of a sample being injected into the heated graphite atomizer (HGA) of a Perkin-Elmer atomic absorption spectrophotometer in use at the quality control laboratory of the General Instrument Corporation in…

    • 1970s

    Close-up view of chemist Lawrence Clark making an adjustment to the recording unit of a Perkin-Elmer Sigma gas chromatography system at the U.S. Army Chemical Test Branch laboratory located in Edgewood, Maryland. Per…

    • 1970s

    General view of chemist Abraham Rednor placing a sample in the subambient temperature chamber of a Perkin-Elmer differential scanning calorimeter at the U.S. Army Chemical Test Branch laboratory located in Edgewood,…

    • 1952

    General view of an unidentified employee conducting low-temperature research in the Dow Chemical Company's Plastics Technical Services laboratory. In the chemical industry, a variety of machines and apparatus are…

    • 1950s

    General view of an unidentified employee using an Atlas Weather-O-Meter in the Dow Chemical Company's Coatings Technical Service department, which developed a range of materials used to improve the performance of paints…

    • 1958

    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…

    • 1958

    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…

    • 1955

    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…

    • 1952

    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…

    • circa 1949

    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…

    • circa 1949

    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…

    • circa 1949

    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…

    • circa 1949

    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…

    • circa 1949

    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…

    • circa 1960

    Leo Labrecque using a Launder-O-Meter to test the wash-fastness of dyed fabric. Bottles containing a standard weight of fabric in a standard soap solution are visible both within and outside of the machine. During the…

    • circa 1960

    View of employee William White examining a Weather-O-Meter at the Althouse Chemical Company Customer Service and Quality Control Laboratory in Reading, Pennsylvania. To the left of the Weather-O-Meter are two…