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Clefs de courant et Commutateurs po
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No. 431. Grand w 1 Electro-aimant.
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No. 570. Banc optique avec photomè
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Instruments de précision apériodi
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T No. 379 et 379a. Galvanomètres
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No. 381. Voltmètres transportables
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XV. Appareils électriques pour mes
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