Urometer or Airometer: How To spell?
The word Urometer is misspelled against Airometer, a noun meaning "A hollow cylinder to contain air. It is closed above and open below, and has its open end plunged into water."
The word Urometer is misspelled against Airometer, a noun meaning "A hollow cylinder to contain air. It is closed above and open below, and has its open end plunged into water."