accuracy
ammeter
cellphone
cellular
check
closeup
communication
connection
current
device
digital
electricity
electronic
equipment
expertise
fix
fixing
gadget
hand
human
instrument
maintenance
male
man
measurement
meter
mobile
multimeter
people
person
phone
reading
repair
repairing
screwdriver
service
skill
smartphone
technician
technology
tester
tool
voltage
voltmeter
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