Refracting terrestrial telescope

Made:
1700-1705 in London
maker:
James Mann and James Mann and
Refracting terrestrial telescope

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Refracting terrestrial telescope, 3-draw, 3-lens eyepiece, by James Mann, London, signed James.MANN/FEC, c.1700. Outer body green vellum, stamped/tooled, wood mounts, object glass cap missing, effective aperture about 1/2 in.

Details

Category:
Optics
Object Number:
1928-876
Materials:
vellum, paint, gold leaf, wood, box (wood), glass, rosewood, paper, cardboard and copper (alloy)
Measurements:
overall (closed): x 260 mm x , 40 mm, .115kg
type:
telescope - terrestrial and telescope - refracting
credit:
Court, Thomas Henry

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