AN OTTOMAN TURKISH ASTROLABIC QUADRANT 1855/6 a wooden quadrant with markings in red and black, gilt decoration throughout, dated 1272 Hirja [=1855/6 CE] to upper left corner, ecliptic and horizon graduated, with gilt in places, small trigonometric grid to top right, the reverse with full sexagemisal trigonometric grid, red painted edges. 6in. (15cm.) maximum radius
AN OTTOMAN TURKISH ASTROLABIC QUADRANT 1855/6 a wooden quadrant with markings in red and black, gilt decoration throughout, dated 1272 Hirja [=1855/6 CE] to upper left corner, ecliptic and horizon graduated, with gilt in places, small trigonometric grid to top right, the reverse with full sexagemisal trigonometric grid, red painted edges. 6in. (15cm.) maximum radius
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.jpg "Quelle: Christie's")
.jpg "Quelle: Christie's")
