Ottoman Lacquered-Wood Quadrant

Description:

Ottoman Lacquered-Wood Quadrant, dated A.H. 1320-A.D. 1902/03, finished in yellow-brown with ink divisions and inscriptions, the front with markings for 41o latitude (Istanbul/Constantinople),the reverse with various curves for problem solving and for finding the time of afternoon prayer, each side with cartouche of instructions, radius 14 7/8 in.
Estimate $300-500

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