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Inventory no. 29666 - Former Display Label

English 9-FOOT REFRACTOR TELESCOPE
c.1715

Pasteboard tubes covered with vellum tooled in gold; lignum vitae lens mounts. Signed twice with letter tools around body-tube at objective end: "IOHN:MARSHALL:LVDGATE:STREET:LONDON"; undated.

The effective aperture of the objective is 7/8".
The designs of the tools used for decorating this instrument are often found on Marshall's instruments. Their style is characteristic of the period 1700-1725. The coiled snake motif has not been recorded on bookbindings, and it is likely that body-tubes for telescopes and microscopes were made by a specialist, who sold them to the optical instrument makers who added the lenses.

[Orrery Collection]
Lent by Christ Church

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