Image: Sundial in the form of a mandolin - Project Gutenberg eText 15050
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Description: Diptych sundial in the form of a lute, circa 1612. The gnomons-style is a string stretched between a horizontal and vertical face. This sundial also has a small nodus (a bead on the string) that tells time on the hyperbolic pelikinon, just above the date on the vertical face. C:\Sundial in the form of a mandolin - Project Gutenberg eText 15050.png
Title: Sundial in the form of a mandolin - Project Gutenberg eText 15050
Credit: From http://www.gutenberg.org/files/15050/15050-h/15050-h.htm
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License: Public domain
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