???? (?????)

????? (?????) ?? ????????? (?? ???? : ??? )? ? (?? ??????? : Quadrant )? ?????? ??? ?? ?? ?????????? ?????? ????????? ???? ??????????? ????? ?? ?? ???? ??????? ??????. ??? ????? ?? ?? ??? ??????? ?? ????? ?????? ????? ?? ??????? (?? ?????? : ???????????? (?στρολ?βον) ) ????? ????????. ^[?] ?? ?? ?? ???????? ?????? ?? ??? ????? ?? ?????????? ?????? ??????? ????? ???? ??????? ?? ????????? ??? ??????.

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↑ The history of the telescope Henry C. King, Harold Spencer Jones Editor Harold Spencer Jones Courier Dover Publications, 2003 ISBN 0-486-43265-3 , ISBN 978-0-486-43265-6

?????????????? ?????????. ≪ Quadrant (instrument) ≫. ?? ????????? ?????????? ??????? ? ??????????? ?? ?? ?????? ????.

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Gunter's Quadrant Article on the Gunter's Quadrant (PDF)
Gunter's Quadrant Simulation of Gunter's Quadrant (requires Java)
A working quadrant in coin form
?????? ??? ???????? (1396) era equal hour horary quadrant (pictures):
- back, with tables
- front, with watch angles

[1] The history of the telescope Henry C. King, Harold Spencer Jones Editor Harold Spencer Jones Courier Dover Publications, 2003 ISBN 0-486-43265-3 , ISBN 978-0-486-43265-6

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