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antique glass face galvanometer electromechanical measuring instrument for electric current Edison & Swan no date/ no number 10 cm x 10 cm x 6 cm I think in good condition 275€ info : dirk.balduyck@telenet.be
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antique glass face galvanometer electromechanical measuring instrument for electric current Edison & Swan no date/ no number 10 cm x 10 cm x 6 cm I think in good condition 275€ info : dirk.balduyck@telenet.be
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