| 324 / | HD | ELECTRICITY: MEASURING AND TESTING |
| 500 | DF | FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS {10} |
| 512 | DF | .~ For fault location {10} |
| 513 | DF | .~.~ Where component moves while under test {2} |
| 515 | DF | .~.~.~ Using a particular sensing electrode {3} |
| 516 | ![]() | .~.~.~.~ Metal chain |