33 / | HD | GEOMETRICAL INSTRUMENTS |
227 | DF | STRAIGHT-LINE LIGHT RAY TYPE {20} |
233 | DF | .~ Gun sight {9} |
235 | DF | .~.~ Ordnance {2} |
237 | DF | .~.~.~ Self adjusting gun movement compensator {2} |
238 | DF | .~.~.~.~ Compensates for moving target {1} |
239 | .~.~.~.~.~ And moving craft or gun platform |