barometer
benchmark
circle
clipart
comparison
compression
concept
dashboard
dial
element
empty
energy
filling
fuel
full
gas
green
high
icon
indication
indicator
industrial
instrument
isolated
level
low
manometer
measure
measurement
meter
metering
needle
odometer
pointer
power
pressure
progress
pump
rating
red
set
sign
stick
symbol
tank
temperature
yard
yardstick
yellow