adult

analog

board

button

closeup

coat

console

control

desk

device

dispatcher

distribution

doctor

engineer

equipment

factory

finger

hand

industrial

industry

instrument

instrumentation

lab

laboratory

lever

machine

male

man

manual

operate

operator

panel

plant

plug

pressing

pushbutton

pushing

scientist

smock

supervision

supply

switch

switchboard

system

technical

technology

touch

turn

white

worker