This apparatus measures humidity. It combines wet- and dry-bulb thermometers with lens-front, engraved stems, mounted on a wooden frame with a water reservoir and a handle for whirling.

We are manufacturers and suppliers of the Whirling Psychrometer, serving Algeria, Argentina, Australia, Bahrain, Bangladesh, Belgium, Bhutan, Brazil, Cambodia, Cuba, Cyprus, Denmark, Ecuador, Egypt, Ethiopia, Finland, France, Georgia, Germany, Ghana, Hungary, Iceland, Italy, Japan, Jordan, Kenya, Kuwait, Malaysia, the Philippines, Tanzania and Uganda.