metron
measure
meter
unit of measure - 39.47 inches long
geometry
(geo - earth) measurement of the earth
optometry
(opsis - sight) measure eyesight
symmetry
(sym - same, equal) measuring the same
barometer
(baros - weight, pressure) device to measure air pressure
thermometer
(thermos - heat) measure heat
diameter
(dia - through, across) measuring across
centimeter
(centum - hundred) one hundredth of a meter
anemometer
(anemos - wing) measures wind speed
metronome
(nomos - law) an instrument for measuring the exact time so a musician knows how fast to play a piece of music