| 33 / | HD | GEOMETRICAL INSTRUMENTS |
| 700 | DF | DISTANCE MEASURING {13} |
| 713 | DF | .~ Sounding type {6} |
| 721 | DF | .~.~ For nongaseous material {1} |
| 722 | | .~.~.~ Liquid (e.g. dipstick) {7} |
| 723 | DF | .~.~.~.~> With means to adjust measuring rod {1} |
| 725 | DF | .~.~.~.~> With cleaning means |
| 726 | DF | .~.~.~.~> With guide |
| 727 | DF | .~.~.~.~> With filter or vent |
| 728 | DF | .~.~.~.~> With lock means |
| 729 | DF | .~.~.~.~> Shape of indicator |
| 730 | DF | .~.~.~.~> With holder or housing for indicator {1} |