The Collaborative International Dictionary
Oscillometer
Oscillometer \Os`cil*lom"e*ter\, n. [L. oscillare to swing + -meter.] An instrument for measuring the angle through which a ship rolls or pitches at sea.
Wiktionary
oscillometer
n. 1 (context physics medicine English) Any of several devices that measure oscillations 2 (context nautical English) A device that measures the roll (or pitch) of a ship