1956 NACA magnaflux inspection. Original caption: "CROWDED CONDITIONS AROUND THE MAGNAFLUX MACHINE WHEN INSPECTING THE NO. 42 ROOTS EXHAUSTER COMPRESSOR IMPELLER".
Fullsize image: https://s3-us-west-1.amazonaws.com/h...n_fullsize.jpg
https://s3-us-west-1.amazonaws.com/h...inspection.jpg
Previously:
https://www.homemadetools.net/forum/...249#post176893
https://www.homemadetools.net/forum/...114#post176359
