This is an antique, 'Officer of the Watch' telescope dating to the latter part of the 19th century.

Inscribed on the draw tube 'A Ross, London, this achromatic telescope is typical of the type used on board ship in the late 19th century.

Ross, based in London, were a respected name in optics and produced quality scientific instruments.

Made from brass, the draw tube slides easily with no dents, although there are dents commensurate with it’s age on the outer tube.

The optics are in good order providing a clear, sharp image. The swivel eye cover is present but the lens cap and sun shade absent as usual.

Dimensions:
Objective Lens Diameter: 5.5cm (2.12'')
Closed Length: 42cm (16.5'')
Max Drawn Length: 72.5cm (28.5'')