| 摘要 |
The guitar scale calculator device of the present invention has a longitudinal housing with a longitudinal open window. A scroll is disposed within the housing and is visible through the open window of the housing. The scroll contains a first indicia indicating a finger placement pattern for playing at least one preselected musical scale in selected tonics and indicating a key note location of the finger placement pattern for each of the preselected musical scales. A clear overlay is positioned and attached within the open window of the longitudinal housing and is constructed of a material which permits seeing the scroll through the overlay. The overlay contains a second indicia indicating a simulated fret board with scale tone letters for the finger placement pattern for each of the preselected musical scales.
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