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'Marconi' Auto-Alarm Selector Type 333, by Marconi Company, London, c. 1920

preview image for 'Marconi' Auto-Alarm Selector Type 333, by Marconi Company, London, c. 1920
Inventory Number: 22770
Object Type:
Place Created: London England United Kingdom Europe
Accession Number: 2004-9/40
Brief Description: 'Marconi' Auto-Alarm Selector Type 333, for use with Marconi Auto-Alarm, in grey painted metal case with glazed top. Glazed top reveals interior showing aluminium and brass apparatus marked C, D, H, G, Z, Q & I. On side of object are two terminals (respectively marked "BRIDGE BELL / KEY" and "TEST KEY") and three sockets (respectively marked "DASH RELAY F <-> S", "SIGNAL RELAY" and "SPACE RELAY F <-> S"). For maritime use. Previously catalogued and associated with 'Marconi' Auto-Alarm Receiver Type 332 (Inv. Num. 41271), 'Marconi' Auto-Alarm Buzzer Type 225 (Inv. Num. 34759), 'Marconi' Auto-Alarm Bell Type 117 (Inv. Num. 14147), 'Marconi' Auto-Alarm Morse Key Type 316A (Inv. Num. 82360).
Primary Inscriptions: "'MARCONI' AUTO ALARM SELECTOR / TYPE 333 P.S. NO 2106 A / INST NO 354327 / MARCONI'S WIRELESS TELEGRAPH CO. LTD. LONDON" printed on metal plaque on side exterior surface.
Provenance: Presented by the Marconi Corporation.
Collection Group: Marconi Collection
Material(s): Metal
Height Width Depth Diameter Unit
265 245 205 mm


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