338 / | HD | ELECTRICAL RESISTORS |
68 | DF | MECHANICALLY VARIABLE (E.G., RHEOSTAT) {24} |
118 | DF | .~ Movable contact electrically adjustable over length of resistance element {21} |
128 | DF | .~.~ Plural {3} |
130 | .~.~.~ Ganged {3} | |
131 | DF | .~.~.~.~> Resistors individually adjustable |
132 | DF | .~.~.~.~> Resistors in tandem along rotary shaft or coupling |
133 | DF | .~.~.~.~> Rectilinearly operated |