Wooden keys and Metal Rods

Unknown Maker


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about 1920

Wooden board with 8 wooden keys with brass screws in middle of key attaching it loosely to board. Keys press down with spring action. At back of key, 8 rods run vertically, then bent horizontal (parallel) to board. From back of each key a nail projects which is attached to spring (other end of spring stapled to board). When key pressed, spring expands. At end of the metal rods are flat plates. May have had mirrors.

Overall: 12 1/2 × 10 1/2 in. (31.8 × 26.7 cm)

Hood Museum of Art, Dartmouth College: Allen King Collection of Scientific Instruments, Hood Museum of Art, Dartmouth College



North America, United States


20th century

Object Name

Scientific Instrument


Scientific Instrument

Scientific Instrument: Acoustics

Not on view


Source unknown; catalogued into the Allen King Collection of Scientific Instruments, 2002.

Old Number


This record was created from historic documentation and may not have been reviewed by a curator; it may be inaccurate or incomplete.

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