The Collaborative International Dictionary
Cycloscope
Cycloscope \Cy"clo*scope\ (s?"kl?-sk?p), n. [Cyclo- + -scope.]
A machine for measuring at any moment velocity of rotation,
as of a wheel of a steam engine.
--Knight.
[1913 Webster] ||
Wiktionary
cycloscope
n. A machine for measure the velocity of rotation, as of a wheel of a steam engine.