Ключевые слова: analog, analyzing, antique, button, calibration, device, dial, display, electrical, electricity, electronic, engineering, equipment, frequency, gauge, ham, indicator, industry, institute, instrument, lab, laboratory, measure, measurement, meter, metering, multimeter, old, panel, radio, receiver, scale, science, scientific, shortwave, signal, station, switch, technology, telecommunication, telecoms, tool, transceiver, transmitter, vintage, volt, voltage, voltmeter, wave,