An instrument that measures air pressure is called? A) Lactometer B) Barometer C) Thermometer D) Hydrometer Related MCQs: An instrument that measures air pressure is called? Blood pressure is the pressure exerted by the body against: Which instrument is used to measure pressure? Sounds usually associated with letters such as f,s, v, and z, in which the air passes through a narrow constriction that causes the air to flow turbulently and thus create a noisy sound are called: