359 / | HD | OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS |
362 | DF | COMPOUND LENS SYSTEM {8} |
368 | DF | .~ Microscope {10} |
372 | DF | .~.~ With plural optical axes {2} |
374 | DF | .~.~.~ Plural oculars {1} |
375 | .~.~.~.~ Binocular {1} | |
376 | DF | .~.~.~.~.~> Stereoscopic {1} |