| 182 / | HD | FIRE ESCAPE, LADDER, OR SCAFFOLD |
| 63.1 | DF | HAVING TRANSPOSITIONING BASE AND ERECTING MEANS {4} |
| 64.1 | DF | .~ Ladder pivotably mounted on transpositioning base (e.g., on vehicle) {2} |
| 65.1 | DF | .~.~ About vertical axis {3} |
| 66.1 | DF | .~.~.~ Extension ladder (i.e., ladder having sliding section) {2} |
| 66.2 | | .~.~.~.~ Motor operated |