cycloscope

== English == === Etymology === From cyclo- + -scope. === Noun === cycloscope (plural cycloscopes) A machine for measuring the velocity of rotation, as of a wheel of a steam engine. === References === Edward H[enry] Knight (1877), “Cycloscope”, in Knight’s American Mechanical Dictionary. […], volumes I (A–GAS), New York, N.Y.: Hurd and Houghton […], →OCLC. “cycloscope”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.