| 324 / | HD | ELECTRICITY: MEASURING AND TESTING |
| 200 | DF | MAGNETIC {24} |
| 207.11 | DF | .~ Displacement {7} |
| 207.13 | ![]() | .~.~ Having particular sensor means {4} |
| 207.14 | DF | .~.~.~> Diverse sensors |
| 207.15 | DF | .~.~.~> Inductive {1} |
| 207.2 | DD | .~.~.~> Hall effect |
| 207.21 | DF | .~.~.~> Magnetoresistive |