33 / | HD | GEOMETRICAL INSTRUMENTS |
300 | DF | INDICATOR OF DIRECTION OF FORCE TRAVERSING NATURAL MEDIA {23} |
355 R | DF | .~ Magnetic field responsive {6} |
363 R | .~.~ Electrical telemetering {5} | |
363 K | DF | .~.~.~> Photoelectric pickoff |
363 L | DF | .~.~.~> Electrical contact pickoff |
363 N | DF | .~.~.~> Electrolytic liquid pickoff |
363 Q | DF | .~.~.~> Resistance, capacitance, or inductance pickoff |
363 Y | DF | .~.~.~> Fluid jet or pressure pickoff |