ID 287660640 © Pippocarlot7 | Megapixl.com
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vintage highvoltage voltmeters electrical obsolete antiquated industrial equipment old aged meter measure analog retro technology power gauge manual instrument metal rust calibration dial current accuracy device panel resistance copper wire coil ceramic display scale safety tester decay patina measurement terminal box station transformer fuse danger regulator components historical industry tool high-voltage milan italy august 2023: close-up showcasing history