SOLD – ‘Captain Douglas’ plotting protractor by Cary

SOLD – ‘Captain Douglas’ plotting protractor by Cary


Country of manufacture

UK and Ireland

Categories: Maritime, Navigational instruments


SOLD – An early 19th century brass ‘Captain Douglas’ plotting protractor engraved, ‘Cary, London, Patent 47’, and with the owners name, ‘J.T. Still’. Designed by Sir Howard Douglas of the Royal Military College in 1811. The silvering to the mirrors has depleted.

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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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