Which of the following is used to measure relative humidity? by Sunday | May 19 | Physics WAEC | 0 comments A. hydrometer B. barometer C. hypsometer D. hygrometer Correct Answer: Option D D. hygrometer Users Also Read These:A relative humidity of 100 percent means that air is?Which of the following instrument may be used to…The mass of water vapour in a given volume of air is…The relative humidity in an incubator is usually set at?Which of the following instruments is used to…