Strowger step-by-step automatic telephone exchange switch, 1897-1898
1897-1898
Cisco Catalyst 1200 switch, 1994
1994
Selector switch, 1903
1903
Telephone crossbar switch, Swedish Ericsson, 1921
1921
Telephone crossbar switch RVD 211, 1970
1970
Five hundred-line switch RVA 30314, 1970
1970
Zither switch with open-wire multiple and two-motion ratchet drive, 1894
1894
Strowger two-motion selector with vertical mount, 1903-1920
1903-1920
Polarized 'guillotine' relay, 1862-1866
1862-1866
Electric light switch for wall
Bank of 50 Keith Line Switches, 1920-1925
1920-1925
Wylex 60 Amp switches
1950-1965
Electric switch
Push-button ceramic bell switch
circa 1900
push-button ceramic bell switch
circa 1900
Electric switch
Electrical switch for physiological use, London, England, 1920-1940
1920-1940
electric wall switch for cooker
Switch Panel
Strowger pre-2000 type group selector, 1920-1926
1920-1926
Director switching device, 1927
1927
Wylex 60 Amp switches
1950-1965
Push-button ceramic bell switch
circa 1900
Strowger 2000-type final selector, 1936-1980
1936-1980
Bank of 50 Keith Line Switches, 1920-1925
1920-1925
two line banks from Keith line bank, 1920-1925
1920-1925
Electric switch manufactured by Woodhouse & Rawson
1900
Strowger pre-2000 type final selector, 1920-1926
1920-1926
spare switch from Keith line bank, 1920-1925
1920-1925
two-motion selectors from Keith line bank, 1920-1925
1920-1925