| 368 / | HD | HOROLOGY: TIME MEASURING SYSTEMS OR DEVICES |
| 46 | DF | PLURAL TIMEPIECE SYSTEM OR SYSTEM DEVICE (E.G., PRIMARY OR SECONDARY CLOCKS) {5} |
| 59 | DF | .~ Secondary {1} |
| 60 | ![]() | .~.~ With mechanical or electromechanical resetting {1} |
| 61 | DF | .~.~.~> Having mechanically actuated electrical switch |