73 / | HD | MEASURING AND TESTING |
570 | DF | VIBRATION {10} |
584 | DF | .~ By mechanical waves {13} |
596 | DF | .~.~ Beamed {10} |
618 | DF | .~.~.~ Measuring or testing system having scanning means {2} |
620 | DF | .~.~.~.~ By reflected wave {4} |
622 | .~.~.~.~.~ Of tubing, vessel, or cylindrical object {1} | |
623 | DF | .~.~.~.~.~.~> Scan from within object |