33 / | HD | GEOMETRICAL INSTRUMENTS |
501 | DF | GAUGE {61} |
549 | DF | .~ With support for gauged article {3} |
551 | DF | .~.~ Profile {2} |
553 | .~.~.~ Member contacts successive points on the article {1} | |
554 | DF | .~.~.~.~> With recording of contact member position at each point on the article |