|
Date: |
|
Description: | Berge London / late Ramsden
The small / scratch marks upon each / of the glasses are to shew their / appropriate sides; which after cleaning / are to be placed together and then put / into the cell, with the convex glass / towards the object. But the object / glass should never be taken / assunder, unless absolutely / necessary.
This achromatic navigational telescope has a tapering mahogany barrel and a single brass draw tube. The brass fittings include an objective lens cap and a sliding eyepiece cover.
The maker's name is inscribed on the draw tube as 'Berge London / late Ramsden'. This refers to Matthew Berge (died 1819), who worked for the famous London instrument maker, Jesse Ramsden (1735-1800). Berge took over the firm after Ramsden's death.
Inside the lens cap there is a printed label with instructions from the maker: 'The small scratch marks upon each of the glasses are to shew their appropriate sides; which after cleaning are to be placed together and then put into the cell, with the convex glass towards the object. But the object glass should never be taken assunder, unless absolutely necessary.'
AUDIT - item needs marking with its identity number. One unnumbered part. Focal length; 46.5". O.G.diameter: 2.4".
caption: Naval telescope
caption: Naval telescope - inscription | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | Achromatic lens achromatic telescopes Berge Matthew Naval telescope | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
|
|