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nostalgic
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vintage
The image shows an antique OPELEC OP50B insulation and earth resistance meter housed in a black case with red trim, displayed in a glass-enclosed exhibit. The meter has various knobs, switches, and a dial on its face, with French text labeling its functions. A descriptive card provides details in Portuguese and English, stating it's a transistorized meter from the 1970s. The exhibit display also features a sign for "AEROPORTO VINCI PORTO", indicating the location is likely Porto Airport.
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