Wireless valve

Description

Wireless 'R' valve, with grid spiral welded to supporting rod, No. C 10078 on glass bulb, Marconi-Osram Valve Co.

Museum reference

T.1932.12.4

Collection

Industry and Commerce : Communications

Object name

Wireless valve

Production information

Marconi-Osram Valve Co., Wireless equipment maker

Date

1916 - 1925

Materials

Glass, Metal

Physical description

Glass bulb