WEMCO 19XB ROTOR SHOWING SOLDERING STRAIN GAUGES TO BLADES OF AXIAL FLOW COMPRESSOR ROTOR
An NACA engineer examines welds on the compressor for a Westinghouse 19XB engine in 1946.
Image Credit: NASA
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https://www.nasa.gov/image-detail/grc-1946-c-14467/
Image CreditNASA
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