Periscope enables viewing of weld joint from inside cylindrical duct to determine when weld penetration occurs. Supplies steady stream of inert gas to shield joint. Device used to calibrate and evaluate techniques for sensing weld penetration.
Periscope For Viewing Weld Penetration
NASA Tech Briefs ; 12 , 2
01.02.1988
Sonstige
Keine Angabe
Englisch
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