metrograph

Meaning

1. noun An instrument attached to a locomotive for recording its speed and the number and duration of its stops.
2. noun A device used to measure the flow and velocity of liquids.
3. noun Any of various devices that continuously record several meteorological phenomena; a radiosonde or one of its precursors.
4. noun A device that uses reflection holograms to accurately measure three-dimensional objects, used primarily in orthodontics.

Similar words

stathmograph seismometrograph micrograph thermometrograph hydrometrograph microseismograph telethermograph electrograph marograph photometrograph