Comprises two tuning forks, each of frequency 426 Hz, on two separate resonance boxes; one fork is fitted with an adjustable loading mass. When both forks are sounded together, a clearly audible beat is produced, the beat rate depending on the difference in frequencies, which can be increased by changing the loading mass.

We are manufacturers and suppliers of the Tuning Fork Pair on Box (Beats Apparatus), 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.