1956 NACA magnaflux inspection. Original caption: "CROWDED CONDITIONS AROUND THE MAGNAFLUX MACHINE WHEN INSPECTING THE NO. 42 ROOTS EXHAUSTER COMPRESSOR IMPELLER".

Fullsize image: https://diqn32j8nouaz.cloudfront.net...n_fullsize.jpg




Previously:

1956 NACA wind tunnel wall jacks - photo
1951 NACA 20-inch compressor in lathe - photo