phonoscope

phonoscope is defined in Webster's Unabridged Dictionary (1913) with 1 sense. The full text of each entry is reproduced verbatim below.

Definitions

  1. 1.(a) An instrument for observing or exhibiting the motions or properties of sounding bodies; especially, an apparatus invented by König for testing the quality of musical strings. (b) An instrument for producing luminous figures by the vibrations of sounding bodies.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

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