Ключевые слова: analog, automation, calibration, circuitry, closeup, connector, control panel, control room, current, dashboard, digital display, electrical, engineering, factory, gauge, gray, indicator light, industrial, industrial design, instrument, instrumentation, knob, maintenance, manufacturing, mechanical, metal panel, meter, monitoring, operator, panelboard, plc, power, relay, signal, switch, switchgear, system, technician, voltage, wiring,