Contains a partly evacuated glass bulb approx. 70 mm dia, with a fine pivot at its centre supporting four lightweight metal arms.

We are manufacturers and suppliers of the Crookes Radiometer (single), 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.