Maker: Watkins, Francis

Year: 1760 c.

Year Range: -

Year Notes:

Manufacturing Location: London, England

Signature: WATKINS / LONDON

Signature Notes:

Inscriptions:

No stand present.

Collection: National Maritime Museum

Accession #: NAV1539

Sources:

Royal Museums Greenwich. "spy glass telescope". http://collections.rmg.co.uk/collections/objects/43751.html [Accessed: June 2016].

Public Notes:

"This small Galilean telescope has a dyed rayskin barrel and a single draw tube of red leather. The other fittings are made of silver. The maker's name is stamped onto the draw tube as 'WATKINS LONDON'. Spy glass telescopes like this were made as personal accessories to fit in the pocket" (Royal Museum Greenwich).

Length (open): 98

Length (closed): 70

F-ratio:

Exit pupil:

Object status:

Objective type: N/A

Optical style galilean

Physical style spyglass

Functional style

Materials: rayskin, silver, leather, glass, shagreen

Drawtube data:

Drawtube notes:

Diameter: 39 mm (barrel), 42 mm (max)

Objective Data

Eyepieces

Notes: