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Pentex production unit: B switch, 1965-1971

Telecommunications

1965-1971

Telephone Relay

Telecommunications

1925-1935

General Post Office Type B landline telegraph rela

Telecommunications

1880-1920

Westinghouse signalling relay from the Glasgow Underground Railway, single element vane relay style H2 by Westinghouse Brake & Saxby Signal Company.

Westinghouse signalling relay from the Glasgow Underground Railway by Westinghouse Brake & Saxby Signal Company.

Signalling & Telecommunications

Ferranti astatic voltage relay

Electronic Components

Ferranti model FR under current relay

Electricity Supply

Ferranti capacitor control

Electricity Supply

Ferranti astatic voltage relay

Electricity Supply

Type GF telephone relays in case, made by S. G. Brown Ltd, London.

Type GF Telephone Relays

Telecommunications

1915-1925

Ferranti earth leakage relay.

Earth Leakage Relay

Electricity Supply

1940-1960

Part-rack, marked B13, of sequence switches No 7011 and associated relays, for Western Electric No 7-A machine switching system, made by Bell Telephone Manufacturing Company SA, Antwerp, 1920-1940

part rack of switches and relays from Western Electric Rotary automatic exchange, 1920-1940

Telecommunications

1920-1940

'Sunvic' current operated relay.

'Sunvic' current operated relay

Electricity Supply

Double contact relay for automatic block, c.1892.

Double contact relay for automatic block

Signalling & Telecommunications

Westinghouse bell-jar type signalling relays from the Glasgow Underground Railway, by Westinghouse Brake & Saxby Signal Company.

Westinghouse bell-jar signalling relays from Glasgow Underground Railway

Signalling & Telecommunications

Westinghouse bell-jar type signalling relays from the Glasgow Underground Railway, by Westinghouse Brake & Saxby Signal Company.

Westinghouse bell-jar signalling relays from Glasgow Underground Railway

Signalling & Telecommunications

Single-element A.C. line relay, 1916

Single-element relay

Signalling & Telecommunications

Wireless telephone relay, made by S. G. Brown Ltd, London.

Wireless Telephone Relay

Telecommunications

Westinghouse bell-jar type signalling relays from the Glasgow Underground Railway, by Westinghouse Brake & Saxby Signal Company.

Westinghouse bell-jar signalling relays from Glasgow Underground Railway

Signalling & Telecommunications

Polarised relay, by Creed and Company Limited, Croydon, Surrey, England, 1945-1948. Used with Morse Creed telegraph equipment.

Polarised Relay, for Morse Creed telegraph equipment

Telecommunications

1945-1948

Double armature polarized relay (pattern B2061)

Polarised relay

Signalling & Telecommunications

Siemans polarized relay, 1890.

Siemans Polarized Relay

Electricity Supply

1890

Telephone relay, made by S. G. Brown Ltd, London.

Telephone relay

Telecommunications

1915-1925