Telescope eyepiece tube

This eyepiece tube from a telescope is made of green vellum with wooden fittings. The tube unscrews into four pieces and contains four lenses. A fifth lens is missing.

Object Details

ID: NAV1501
Collection: Astronomical and navigational instruments
Type: Telescope eyepiece tube
Display location: Not on display
Creator: Unknown
Date made: circa 1740
Credit: National Maritime Museum, Greenwich, London, Caird Collection
Measurements: Overall: 305 mm; Diameter: 36 mm