contact arm, wiper, wiper arm

variable resistor, potentiometer, photocell, thumbwheel, toggle switch, parabolic reflector, ammeter, resonant cavity, bimetal, pushbutton, electromotive force, annunciator, phototransistor, knob, detents, bistable, piezoelectric crystal, humidistat, tuning fork, microswitch, switches, intensifier, diffraction grating, mouselike, triode, penlight, pawl, kickdown, paramagnetic, actuating, windings, stroboscope, interrupter, thyristor, rhythmicity, handwheel, venturi, millivolt, microelectrode, vernier, voltmeter, tachymeter, illuminator, mutes, treadles, parasympathetic nervous system, solenoid, thermistor, polarity, valsalva maneuver, portamento, actuator, lever, expander, cautery, nernst, halide, photoflash, photomultipliers, stators, thermostat, crosshead, collimation, quencher, hypercapnia, brownian, illuminant, photoconductive, crystal oscillator, cogwheel, impedances, stimulator, airbrake, pintle, servomotor, compensator, microphonic, dipole antenna, cuvette, plasmatic, lubricator, passband, extensometer, kinematic viscosity, voltage divider, paperlike, neurone, randomizer, tactile sensation, poppet valve, gearset, fulcrums, vagus, posterior pituitary, joystick, tappets, iris diaphragm, zener diode, ophthalmoscope, synchronous motor, sibilance, oculi, pump, resistor, compressor, condenser, generator, micrometer, resistors, switch, switchboard, galvanometer, hoist, injector, winding, accumulator, blower, boiler, coil, rheostatic, arc, brightness, evaporative, leakage, load, r.p.m., thermostatic, width, aerodynamic, armature, automatic, ballast, battery, bias, boer, boundary, circuit, conduction, convective

dimmer

dimmer, electric blanket

resistance