Unknown, 1720 c.
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photo - whole telescope
Basic Info

Maker: Unknown

Year: 1720 c.

Year Range: -

Year Notes:

Manufacturing Location:


Signature Notes:


No stand present.

Collection: National Maritime Museum

Accession #: NAV1538


Royal Museums Greenwich. "spy glass telescope". http://collections.rmg.co.uk/collections/objects/43750.html [Accessed: June 2016].

Public Notes:

"This is a spyglass or miniature telescope. It is very well made, but was meant as a fashionable personal accessory that could fit in one's pocket rather than as a serious telescope. The barrel is made of turned lignum vitae and the lenses are set in ivory mounts. It has a turned wooden case (also lignum vitae) that has been made to fit the telescope exactly" (Royal Museums Greenwich).

Length (open): 77

Length (closed):


Exit pupil:

Object status:

Optical Basics

Objective type: N/A

Optical style

Physical style spyglass

Functional style

Materials: lignum vitae, glass, ivory

Optical/Lab Data

Drawtube data:

Drawtube notes:

Diameter: 44 mm

Objective Data



600 d ± e ± feeee ±
500 a ± b ± c ±