Hypsometer
[hip'sɒmitә]
Definition
(noun.) an altimeter that uses the boiling point of water to determine land elevation.
Typed by Judy--From WordNet
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.
Checked by Francis