ID 1250867
Lot 33 | A LARGE BRASS ASTROLABE AND SLIDE RULE
Estimate value
£ 60 000 – 90 000
ATTRIBUTED TO JOHN MARKE, 1678
The front of the plate engraved for a universal astrolabe with De Rojas projection, graduated regula and cursor, below the throne a table of 24 stars and a perpetual calendar for Leap Years and Epact, dated 1678; the reverse of the plate with scales for a circular slide rule with scales for Tangents, Sines and Numbers, two rotating index arms.
28 x 26 in. (71.3 x 65.9 cm.)
Provenance
Sir John Houblon (1632-1712),
Thence by descent.
Exhibited
London: Royal Society Soirée, 14 May 1902.
| Applied technique: | Metalwork |
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| Medium: | Brass |
| Place of origin: | England, Northern Europe, Europe, United Kingdom |
| Category: | Scientific instruments |
| Auction house category: | All other types of objects |
| Applied technique: | Metalwork |
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| Medium: | Brass |
| Place of origin: | England, Northern Europe, Europe, United Kingdom |
| Category: | Scientific instruments |
| Auction house category: | All other types of objects |
| Address of auction |
CHRISTIE'S 8 King Street, St. James's SW1Y 6QT London United Kingdom | |
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| Phone | +44 (0)20 7839 9060 | |
| Buyer Premium | see on Website | |
| Conditions of purchase | Conditions of purchase |











