Item Type: Harmonic Diagram
Full Description: A modern reproduction of the Harmonic Diagram, marketed as "The All-around Transposing Disc" by M Fokuhl, Leutenbach, D-71397, and including an English-language instruction leaflet.
Source Catalogue No: The Concertina Museum: 1.2.4-003
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Created August 2009 by Neil Wayne
Last Modified 07 February 2012 by Neil Wayne, Chris Flint, Wes Williams
This page created Tuesday 14 February 2012.