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 ...

About this Item

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 ...
Author
Foster, Samuel, d. 1652.
Publication
London :: Printed by R. & W. Leybourn for Nicholas Bourn ...,
1654.
Rights/Permissions

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Subject terms
Horology -- Early works to 1800.
Sundials.
Link to this Item
http://name.umdl.umich.edu/A40031.0001.001
Cite this Item
"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 ..." In the digital collection Early English Books Online. https://name.umdl.umich.edu/A40031.0001.001. University of Michigan Library Digital Collections. Accessed April 29, 2025.

Pages

The manner how to fashion the Cock which holdeth the Index.

The fashion may be seen by the figure A C D. At A is the place of the fiduciall point of the foot of the Index to be assigned: and in that point a hole must be pierced, and a threed fixed. Then the Cock must have two holes more pierced, one at C, the other at D, both to stand perpendi∣cularly over the line of 12. That at C must be so placed, that the angle C A B may be 70¾ gr. That at D must be placed so, that D A B may be an angle of 90 gr.

Page 120

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