Reference Radiographs are nondestructive testing standards universally accepted because of their high reliability in accept-reject actions.
Vol III -- 32 plates, Over 3 - 8 in.
RRE039003-C01
RRE039003-C02
RRE039003-C03
RRE039003-C04
RRE039003-C05
RRE039003-C06
RRE039003-C07
RRE039003-F01
RRE039003-F02
RRE039003-R01
RRE039003-R02
RRE039003-R03
RRE039003-SN