33 / | HD | GEOMETRICAL INSTRUMENTS |
700 | DF | DISTANCE MEASURING {13} |
832 | DF | .~ Single contact with a work engaging support {3} |
833 | .~.~ Adapted for a particular workpiece {3} | |
834 | DF | .~.~.~> Coating or surface layer thickness |
835 | DF | .~.~.~> Reeled material |
836 | DF | .~.~.~> Depth of aperture or groove |