Compressor balancing machine at NASA's Lewis Research Center (now Glenn Research Center), c. 1970. Full caption: "MULTI STAGE COMPRESSOR IN BALANCING MACHINE IN MACHINE SHOP"
Fullsize image: https://diqn32j8nouaz.cloudfront.net...g_fullsize.jpg
Previously:
1951 NACA 20-inch compressor in lathe - photo
Supersonic wind tunnel compressor - photo
Inspecting screw compressor rotors - GIF
Massive screw compressor - photo
Chiller compressor cutaway - photo
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