Tuning Forks on Resonance Box.
Steel forks are mounted into a solid wooden resonance box.
For demonstrating the formation of basic major cord. Comprises four steel forks mounted on a common box and having frequency of C (256), E (320), G (384), C (512).
Includes a hammer.
Box base measures 11" long, 4" wide, and 2.5" tall. Features rubber stoppers on the bottom to prevent the apparatus from moving or sliding.