Box of 6 geissler tubes. Is a glass tube used to demonstrate the principles of the discharge. It was invented by the German physicist. Very good condition, not tested. Size of the tubes - 9.5 cm.All other countries: 35 euros. For France only bank check or bank transfer. We are pleased to give you our opinion, advice or valuation of single items or all collections. We buy for private collectors, institutions and museums, photographic collections and photographic processes from the 19th century, rare cameras, primitive cinematographic devices, scientific, technical, acoustic, optical, electric or astronomical devices or toys. We offer an opinion, a council, an expertise of your objects or your collections.
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