89 / | HD | ORDNANCE |
37.01 | DF | MOUNTS {18} |
41.01 | .~ Training mechanisms {5} | |
41.02 | DF | .~.~> Motor operated {12} |
41.16 | DF | .~.~> For relatively movable gun barrels |
41.17 | DF | .~.~> Aiming device mounted on gun |
41.18 | DF | .~.~> For limiting the field of fire |
41.19 | DF | .~.~> Sights or line devices {2} |