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Cross / Radiguet & Massiot type, vacuum tube set.

Cross / Radiguet & Massiot type, multi element vacuum tube. The phenomenon of electrical discharge in a gas depends upon the degree of vacuum. The apparatus consist of 7 tubes with different degrees of vacuum.
La note de l’expert
Marque

Radiguet et Massiot.

Année

1880 - 1899

Pays

France

Prix

From different angles

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