Epact Scientific Instruments of Medieval and Renaissance Europe

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Quadrant
Signed by Robert Dudley
Dated 1597; English
Brass; 370 mm in radius

This quadrant is finely engraved with a number of scales. One face bears a wind rose, a zodiacal calendar and a shadow square. On the back of the instrument are hour lines, the trajectory of the diurnal arc of the sun, a zodiac strip and a scale of degrees.

The instrument originates from the Dudley bequest.

Istituto e Museo di Storia della Scienza, Firenze
Inventory no. 3365

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