odometer vs trocheameter

odometer

noun
  • A wheel used by surveyors, which registers distance traveled. 

  • An instrument, usually embedded within the speedometer of a vehicle, that measures the distance the vehicle has traveled since production. 

trocheameter

noun
  • A device attached to the wheel of a cart, carriage, etc. to measure distance travelled 

How often have the words odometer and trocheameter occurred in a corpus of books? (source: Google Ngram Viewer )