Pocket telescope

This achromatic telescope has seven draw tubes, allowing it it be folded up to a small enough size to fit into a pocket. The barrel is covered in green rayskin and the tubes and objective lens cap are made of German silver. The eyepiece has a sliding cover.

An inscription on the eyepiece tube gives the maker's name and his address as '122 Regent Street, London'. The earliest date that Post Office directories list John Newman at this address is 1827.

Object Details

ID: NAV1528
Collection: Astronomical and navigational instruments
Type: Pocket telescope
Display location: Not on display
Creator: Newman, John Frederick; Newman, John
Date made: circa 1827; circa 1830
Credit: National Maritime Museum, Greenwich, London, Caird Collection
Measurements: Length: 125 mm (closed), 557 mm (fully extended); Diameter: 41 mm (barrel)
Parts: Pocket telescope
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