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Inventory no. 14776 - Former Display Label

English 12-INCH GUNTHER'S SECTOR
?c.1620-30.

Brass; with deal case. Unsigned and undated, but probably by Elias or John Allen, judging by the style of the numerals.

This sector includes the scales of metals (indicated by the appropriate planetary signs), as well as the usual scales of meridional parts and trigonometrical functions. The scales of metals were used for finding proportional weights of metals and for transforming the data of a given body into those of bodies of another material or size.

[Probably Orrery Collection]
Lent by Christ Church.

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