The Jolly air-thermometer bulb rests on a wooden frame, fixed at three positions — top, middle and bottom — on the stand.

We are manufacturers and suppliers of the Jolly Air Bulb, 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.