The instrument used for measuring atmospheric pressure is known as? by Sunday | Jun 15 | Geography WAEC | 0 comments A. rain guage B. thermometer C. barometer D. sundial Correct Answer: Option C – barometer Users Also Read These:The instrument used for measuring relative humidity…If the pressure of the vapour on top of an enclosed…At 35°C and 5 atmospheres pressure the density of a…The instrument used for measuring atmospheric pressure is?The height at which the atmosphere ceases to exist…