Device creates narrow, well-defined beam for radiographic measurements of thickness. Cylindrical plug collimates and aligns X rays with respect to through holes in parts. Helps in determination of wall thickness by radiography. Lead absorbs X rays that do not pass axially through central hole. Lead/vinyl seals prevent off-axis rays from passing along periphery of plug.
Plug Would Collimate X Rays
NASA Tech Briefs ; 13 , 2
1989-02-01
Miscellaneous
No indication
English
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