Giltzow Guitars
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  • Finished Guitars
    • Build for David Starr
    • Slope Shouldered Dred Build for Brian Baker
    • Curse of the Voo'doo Guitar
    • Timothy Giltzow GL-OO
    • Build for Ron V
    • Build for Eric Ellis
    • GL-00 For Mick
    • Parlor Guitar for Dave M
    • GL-00 for Ron V
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    • Guitar for Al
    • WCG for Vaughn
    • Guitar for Gracie
    • RV Ziricote JMG
  • Guitars in Progress
    • Guitar for Rosie
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    • Slope Sholdered Dread
    • 50th Guitar for Mark
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  • LB-6
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    • Repair #6
  • Geared devices
    • Roman Sundial
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Front dial and 7 days of the week with selection knob

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Back dial. Displays sun and moon in the zodiac, phase of the moon and age of moon in days

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Location latitude is selected and gnomon is turned to appropriate month to use sundial

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The days of the week knob is turned daily to operate the gear train that rotates the back displays

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Sun in the zodiac display

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Moon in the zodiac display

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This pointer on the hanger mechanism, sets the latitude of your location

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