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Date: |
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Description: | Dollond / LONDON
The decagonal mahogany barrel of this achromatic telescope is slightly tapered. There is a single brass draw tube and brass fittings that include sliding objective and eyepiece lens covers.
The maker?s name is inscribed on the sliding cover for the objective lens as 'Dollond / LONDON'. This is the firm started by the London optical instrument maker John Dollond (1706-61), who first patented the achromatic lens. By the time of the manufacture of this telescope, John's son Peter had taken over the firm.
AUDIT - object needs marking with its Identity number. Two unnumbered parts.
Focal length: 50.5". O.G.diameter: 1.8".
Objective assembly damaged.
caption: Polygonal telescope
caption: Polygonal telescope - inscription | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | Polygonal telescope Achromatic lens achromatic telescopes | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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