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Inventory no. 49354 - Former Display Label

?Persian SET SQUARE
?19th cent.

No inscriptions. Brass. Height:
161 mm; thickness: 2.3 mm; angle 21°
(= roughly the latitude of Mecca), but
23°30', for the obliquity of the
ecliptic (and its complement 66°30')
might have been expected.

[69-217/3] Purchase

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