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Titolo |
The art of dialling, by a new, easie, and most speedy way [[electronic resource] ] : Shewing how to describe the hour lines upon all forts of plains; howsoever, or in what latitude soever situated. Also; to find the hour of the day, and the azimuth of the sun, whereby the sight of any plain is examined. Performed by a quadrant filled with lines necessary to that purpose. / / Invented and published in Anno 1638, by Samuel Forster, then Professor of Astronomie in Gresham Colledge |
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