| 377 / | HD | ELECTRICAL PULSE COUNTERS, PULSE DIVIDERS, OR SHIFT REGISTERS: CIRCUITS AND SYSTEMS |
| 1 | DF | APPLICATIONS {11} |
| 19 | DF | .~ Measuring or testing {6} |
| 24 | | .~.~ Dimension {2} |
| 24.1 | DF | .~.~.~> Distance and Powered Vehicle (e.g., odometer) |
| 24.2 | DF | .~.~.~> Distance and Human Activity (e.g., pedometer, nonpowered golf carts) |