Maker: Unknown

Year: 1750 c.

Year Range: -

Year Notes:

Manufacturing Location:

Signature:

Signature Notes:

Inscriptions:

No stand present.

Collection: National Maritime Museum

Accession #: NAV1663

Sources:

Royal Museums Greenwich. "combination telescope and microscope". http://collections.rmg.co.uk/collections/objects/43875.html [Accessed: June 2016].

Public Notes:

"This instrument unscrews into a number of parts which can be assembled into different optical instruments. It can be used as a telescope, but when the barrel is unscrewed a simple microscope, or flea-glass, is also revealed. Using this, a specimen stuck on a pin (now missing) can be viewed through a small lens. The other accessories include a sundial. This type of multi-purpose object was common around 1700" (Royal Museums Greenwich).

Length (open): 155

Length (closed):

F-ratio:

Exit pupil:

Object status:

Objective type: N/A

Optical style

Physical style

Functional style

Materials: bone, brass, glass, paper

Drawtube data:

Drawtube notes:

Diameter: 35

Objective Data

Eyepieces

Notes: