| 403 / | HD | JOINTS AND CONNECTIONS |
| 52 | DF | ARTICULATED MEMBERS {13} |
| 83 | DF | .~ Lockable at fixed position {4} |
| 104 | ![]() | .~.~ Plural distinct positions {2} |
| 105 | DF | .~.~.~> Unidirectional movement, e.g., ratchet, etc. |
| 106 | DF | .~.~.~> At least one discrete position {1} |