Dulcitone

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A dulcitone is a keyboard instrument in which sound is produced by a range of tuning forks, which vibrate when struck by felt-covered hammers activated by the keyboard. The instrument was designed by Thomas Machell of Glasgow in the 1860s, at the same time as Victor Mustel's organologically synonymous typophone,^[1] and manufactured by the firm of Thomas Machell & Sons during the late nineteenth and early twentieth centuries.

Most of the early models are tuned to sharp pitch, or the diapason normal of A435.^{[clarification needed]} Some of the late models use an action suspended on a system of leaf springs, which is considerably quieter than that illustrated.