Jones 50-line switchboard, 1879.
1879
Edison telephone peg switchboard and pegs, 1879
1879
Interface unit for blind telephone switchboard operators, 1977
1977
PABX7 switchboard from telephone exchange for use by blind operators, 1977
1977
Sinclair Line Selector Automatic Switch Board, 1880-1890
1880-1890
Steel Iolanda switchboard, with light bulb and shade
1900-1950
electricity substation switchboard
1939
Sinclair Line Selector Automatic Switch Board, 1886
1886
Aron Electricity meter switchboard type
Marine charging switchboard, 1900-1950
1900-1950
Switchboard PMBX 2+6 lind; PMBX 2/2A
Switchboard
1900
AC relay to switchboard used on old magneto circuits to ring exchange
Murray switchboard
Twenty-line switchboard, magneto cord
Eight-line switchboard
Cord Switchboard with Lamp Signalling Type 4/1A by The Plessey Co. Ltd.
Manual Exchange Switchboard CB1
1922
Electrical switchboard for magneto generator
1910
10 Line Switchboard for Wireless Set no. 10
Manual Exchange Switchboard CB1
1922
Back panel of 1902 lighting switchboard from Gloucester Cathedral
Switchboard, with ten lines
Two-line switchboard
Three wood and glass cupboards
Westinghouse switchboard A.C. Voltage indicator
Metal Iolanda switchboard, 1900-1950
1900-1950
Marine charging switchboard, 1900-1950
1900-1950
Lighting switchboard
Original switchboard from the Mansion House
1891
Switchboard PABX (ref SA8133)
1902 lighting switchboard from Gloucester Cathedral
1902
A typical pre-1914 main switchboard
1914
Distribution switchboard installed about 1890 in Lord Brassey's house
Two switchboards type 1052B
Section (3 positions) of a "Coded-Call Indicator" switchboard from a manual telephone exchange
25-line rural automatic exchange switchboard UAX5 Mark 236 (c.1930)
1930
Generator switchboard with main switch
6-way weatherproof pyrometer switchboard
1900-1982
Telephone Switchboard with Telephone and Apparatus
Thirty-line telephone switchboard
Type 242E switchboard no. 4316
Switchboard by Newton, 1895
1895
Type 242E switchboard no. 4321
Type 242E switchboard no. 4320
3 phase switchboard meter
Switchgear with associated voltmeters and additional ammeters
circa 1930s