PROBL. 10.
The Suns altitude given to find his Azimuth in the aequator.
Lay the thread to the altitude in the limb, counted from 60/0 on the loose piece to∣ward the end, and on the line of Azimuths
The semicircle on a sector in two books. Containing the description of a general and portable instrument; whereby most problems (reducible to instrumental practice) in astronomy, trigonometry, arithmetick, geometry, geography, topography, navigation, dyalling, &c. are speedily and exactly resolved. By J. T.
About this Item
- Title
- The semicircle on a sector in two books. Containing the description of a general and portable instrument; whereby most problems (reducible to instrumental practice) in astronomy, trigonometry, arithmetick, geometry, geography, topography, navigation, dyalling, &c. are speedily and exactly resolved. By J. T.
- Author
- Taylor, John, 1666 or 7-1687.
- Publication
- London :: printed for William Tompson, bookseller at Harborough in Leicestershire,
- 1667.
- Rights/Permissions
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To the extent possible under law, the Text Creation Partnership has waived all copyright and related or neighboring rights to this keyboarded and encoded edition of the work described above, according to the terms of the CC0 1.0 Public Domain Dedication (http://creativecommons.org/publicdomain/zero/1.0/). This waiver does not extend to any page images or other supplementary files associated with this work, which may be protected by copyright or other license restrictions. Please go to http://www.textcreationpartnership.org/ for more information.
- Subject terms
- Mathematics -- Early works to 1800.
- Navigation -- Early works to 1800.
- Dialing -- Early works to 1800.
- Link to this Item
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http://name.umdl.umich.edu/A64223.0001.001
- Cite this Item
-
"The semicircle on a sector in two books. Containing the description of a general and portable instrument; whereby most problems (reducible to instrumental practice) in astronomy, trigonometry, arithmetick, geometry, geography, topography, navigation, dyalling, &c. are speedily and exactly resolved. By J. T." In the digital collection Early English Books Online. https://name.umdl.umich.edu/A64223.0001.001. University of Michigan Library Digital Collections. Accessed June 7, 2025.
Pages
Page 17
it cuts the Azimuth from South. Ex. gr. at 25 deg. altitude the Azimuth is 53 deg. At 30 deg. altitude the Azimuth is 41 deg. 30 min. fere.