Prismatic surveying compass and case – Thomas Jones

Prismatic surveying compass and case – Thomas Jones

£245

Circa

1840

Country of manufacture

UK and Ireland

Categories: Scientific, Surveying Instruments & Mining

Description

A green card dial, lacquered brass surveying compass, signed on the dial, ‘Thomas Jones & Sons. 62 Charing Cross, London’. It has a diameter of 3.75 inches and the dial is centrally balanced with markings from 0 – 360. There is a folding prism sight with two sun shades and opposite the prism, a sighting arm with adjustable mirror. A small button to the base of the sighting arm locks the dial in place. There is a threaded lug to the underside for tripod mount. In very clean and well kept condition.

Contained in original leather case with buckle and strap.

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GB Scientific Inspirations

Scientific Inspirations

I live in Lancashire (U.K.) and have been a dealer and collector of scientific and nautical instruments for a number of years. My stock has included some fine items from museums and colleges, which were surplus to their requirements. I occasionally purchase some interesting items from abroad, having established some reliable sources.

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