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electricity meter
control panel
thermostats
switch cabinet
plug-in system
controls
electrometer
empanel
digital safe
tabulator
user interface
inverter
control desk
magnetic tape
temperature controller
meter
temperature display
transport panel
dosimeter
voltmeter
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electricity meter
control panel
thermostats
switch cabinet
electrometer
plug-in system
controls
empanel
user interface
tabulator
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control panel
switchgear
controls
engine room
transport panel
the interior of the cockpit
control desk
instrument panel
flight board
switchboards
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ampex
microfilms
microfilm
audiocassettes
magnetic tape
microfilming
audiotapes
laserdisc
the record machine
studer
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old calculating machine
switchboards
switchboard
reich cash register
switch cabinet
switches
connectors
keypads
electricity meter
teleprinter
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control panel
switchboard
old calculating machine
switchgear
radioteletype
switchboards
oscilloscopes
rectifiers
calculating machine
compressors
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control panel
switchgear
control desk
switchboards
switchboard
subcabinet
traffic signal control board
controls
control center
access control
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ampex
oscilloscopes
tektronix
arpanet
heathkit
control panel
synclavier
radiophonic
chromatograph
sequencers
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dehumidifiers
a museum exhibit
stereo system
heat pumps
autoclaves
inverter
dehumidifier
airconditioners
commercial air conditioning
inverters
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payphones
pay phone
telephone hanging
telephone handset
telephones
telephone set
telefonico
vintage telephone
phone booth
telphone
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control panel
electrometer
heathkit
switchboard
electricity meter
controls
transmitter
oscilloscope
switchboards
rectifiers
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control panel
controls
traffic signal control board
switchboards
switchboard
switchgear
transport panel
electricity meter
control desk
engine room
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control panel
switchgear
eniac
controls
switchboards
transmitter
radar equipment
transport panel
switchboard
rectifiers
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temperature controller
multimeter
kitchen equipment
switchgear
electrometer
telephone handset
thermocouple
rectifiers
electricity meter
isolators
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control panel
control desk
tabulator
controls
heathkit
switchboard
game joystick
old calculating machine
calculating machine
control center
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telephone hanging
payphones
pay phone
telefonico
telephone handset
telephone set
telefonicas
telefonos
phone booth
telephones
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electricity meter
electrometer
inverter
photometer
hyperbaric
control panel
automat
the meter
meter
temperature controller
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multimeters
control panel
controls
autoclave
voltmeter
electrometer
instrument panel
rheostat
heathkit
altimeters
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control panel
switchgear
controls
compressors
electricity meter
oscilloscopes
overcurrent
arpanet
oscilloscope
control desk
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control panel
electricity meter
pushbuttons
controls
switchboard
bell button
pushbutton
control desk
push button
user interface
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electricity meter
control panel
keypads
controls
power socket
thermostats
push button
access control
user interface
intercom