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
https://diqn32j8nouaz.cloudfront.net...inspection.jpg
Previously:
https://www.homemadetools.net/forum/...249#post176893
https://www.homemadetools.net/forum/...114#post176359
