機器
aged
ammeter
analog
ancient
antique
black
circuit
closeup
control
current
device
dirty
display
electric
electrical
electrician
electricity
electronic
energy
engineering
equipment
gauge
glass
industrial
industry
instrument
isolated
measure
measurement
meter
old
panel
power
rate
resistance
retro
rusty
scale
scientific
technologic
technology
test
tool
vintage
volt
voltage
voltmeter
white
work