Terrestrial refracting telescope

maker:
J. Dollond & Son
Terrestrial refracting telescope, 3-draw

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Terrestrial refracting telescope, 3-draw
Science Museum Group
© The Board of Trustees of the Science Museum

Terrestrial refracting telescope, 3-draw, by John Dollond and son (Peter), London, c. 1760. Diameter of object glass 7/8 inch. Shagreen tube and vellum draw tube, brass mounts; sliding caps at each end.

Details

Category:
Optics
Object Number:
1918-130
Materials:
vellum, fish skin, paper (fibre product), cardboard, copper (alloy) and glass
Measurements:
overall: x 250 mm x , 47 mm, .32kg
type:
telescope - terrestrial and telescope - refracting
credit:
Court, Thomas Henry