What's the difference between hypsometer and hypsometry?
Hypsometer
Definition:
(n.) An instrument for measuring heights by observation of barometric pressure; esp., one for determining heights by ascertaining the boiling point of water. It consists of a vessel for water, with a lamp for heating it, and an inclosed thermometer for showing the temperature of ebullition.
Example Sentences:
Hypsometry
Definition:
(n.) That branch of the science of geodesy which has to do with the measurement of heights, either absolutely with reference to the sea level, or relatively.