adjustment
analog
analyzing
button
calibration
closeup
connector
counter
digital
digital signal
digitally
display
electrical
electricity
electronic
engineering
equipment
frequency
generated
hi tech
industry
instrument
isolated
laboratory
measurement
measuring
modern
oscilloscope
pincers
pliers
plug
probe
resolution
sample
scale
science
scientific
screen
screw driver
signal
sine
soldering
soldering iron
switches
technology
test
tool
waveform
white