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| Carpentier locator device for breakdowns on cables | Breakdown locator device Roller – Smith | Megger Harris’ patent | Measurer of resistències d’aïllament i capacitat | Measurer of resistències d’aïllament i capacitat FACE |
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| Measurer of rigidesa dielèctrica | Measurer of rigidesa dielèctrica | Landmeter | Measurer Leitz Wetzlar | |
