| 33 / | HD | GEOMETRICAL INSTRUMENTS |
| 501 | DF | GAUGE {61} |
| 600 | | .~ Automotive {10} |
| 601 | DF | .~.~> Mechanical engine timing by piston contact in engine cylinder |
| 602 | DF | .~.~> Distributor point setting |
| 603 | DF | .~.~> Connecting rod {1} |
| 605 | DF | .~.~> Piston, piston ring, or crankshaft |
| 606 | DF | .~.~> Power train |
| 607 | DF | .~.~> Fuel pump, injection nozzle or valve, or carburator |
| 608 | DF | .~.~> Frame alignment |
| 609 | DF | .~.~> Brake {1} |
| 611 | DF | .~.~> Engine valve, valve-stem, or tappet |
| 612 | DF | .~.~> Torsion bar |