APPARATUS AND INSTRUMENTS RESPONSIVE TO A VARIABLE FOR MEASURING [ AND/OR CONTROLLING ] PRESSURE, TEMPERATURE, LIQUID LEVEL, ELECTRICAL OUTPUT [, ELECTRICAL MAGNITUDES, ] * AND * FLOW OF FLUIDS [, AND DETERMINATION OF THE PRESENCE OF FLAMES-NAMELY, ALARM, CONTROL AND SIGNALLING SYSTEMS ]

Scientific, nautical, surveying, optical, weighing, measuring, signaling, checking, and inspection apparatus and instruments, namely, apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, electrical controlling devices, electrical connection boxes, electric voltage transformers, electric current switchers, electric transformers; apparatus for recording, transmission or reproduction of sound or images; magnetic recording...