Virtual Museum - Traversi Museum - DATABASE
Instrument's card
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SourcesJoubert J., Traité Élémentaire d'electricité, G. Masson Éditeur, Paris, 1889, pag. 433, fig. 320.
The indications that complete the voices of the conservation state have the following meanings:
(?) = Perhaps complete, M = maintenance, P = Partial, R = restored, D = used for teaching, NC = not checked; X = impossible to verify.