Pedal drum

Pedal drum (Fr.: timbale à pédale; Ger.: Pedalpauke; It.: timpani a pedali, *machine drum with a pedal that acts on a central tuning screw. The farther the pedal is depressed, the more the pitch is raised. See also: timbalarion (170). Sachs, Curt. The History of Musical Instruments. New York, 1940.