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Author: Foster, Samuel, d. 1652.
Title: Elliptical or azimuthal horologiography comprehending severall wayes of describing dials upon all kindes of superficies, either plain or curved, and unto upright stiles in whatsoever position they shall be placed / invented and demonstrated by Samuel Foster ...
Publication info: Ann Arbor, MI ; Oxford (UK) :: Text Creation Partnership,
2003-11 (EEBO-TCP Phase 1).
Rights/Permissions:

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Print source: Elliptical or azimuthal horologiography comprehending severall wayes of describing dials upon all kindes of superficies, either plain or curved, and unto upright stiles in whatsoever position they shall be placed / invented and demonstrated by Samuel Foster ...
Foster, Samuel, d. 1652., Twysden, John, 1607-1688., Wingate, Edmund, 1596-1656.

London: Printed by R. & W. Leybourn for Nicholas Bourn ..., 1654.
Subject terms:
Horology -- Early works to 1800.
Sundials.
URL: http://name.umdl.umich.edu/A40031.0001.001

Contents
SECT. VII. 1. How to draw and divide the Ellipsis upon any Plain, to an Index that stands upright (not to the Plain, but) to the Zenith line of the place, or perpendicular to the plain of the Horizon.
SECT. VIII. Hitherto of Ellipticall Dials to all Superfi∣cies whether plain or curved, whose In∣dexes stand upright in the Zenith line of the place: There now followeth some other directions how the same thing may be done to any Superficies, and to an Index set casu∣ally in any position whatsoever. But first are premised some usefull Propositions tend∣ing to the same purpose.