Refracting terrestrial telescope by Mann & Ayscough

Made:
1740-1750 in London
maker:
James Mann & james Ayscough
Refracting terrestrial telescope by Mann & Ayscough, London, c

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Refracting terrestrial telescope by Mann & Ayscough, London, c
Science Museum Group
© The Board of Trustees of the Science Museum

Refracting terrestrial telescope by Mann & Ayscough, London, c.1745. 3-draw, object glass 1/2 inch, brass mounts, sliding dustcaps at both ends, body covered in red shagreen, tubes in green vellum. Stamped in gold "Mann & Ayscough London".

Details

Category:
Optics
Object Number:
1920-467
Materials:
vellum, box (wood), wood, copper (alloy), fish skin, cardboard, gold leaf, paint and glass
Measurements:
overall (closed): x 240 mm x , 40 mm, .22kg
type:
telescope - terrestrial and telescope - refracting
credit:
Court, Thomas Henry