| 403 / | HD | JOINTS AND CONNECTIONS | 
| 52 | DF | ARTICULATED MEMBERS {13} | 
| 83 | DF | .~ Lockable at fixed position {4} | 
| 84 | DF | .~.~ At selected angle {7} | 
| 91 | DF | .~.~.~ Including pivot stud {7} | 
| 92 | DF | .~.~.~.~ Including radially spaced detent or latch component {4} | 
| 95 |  | .~.~.~.~.~ Pivoted detent |