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the Foreign Office
published by the manufacturer
In excellent condition and full working order
No doubt as a result of this
continuing to supply the East India Company until 1838
Kelvin & James White Ltd, Barker 'RGS' Compass c.1904 Troughton & Simms the Foreign OfficeA rare variant of the Francis Barker & Son RGS type prismatic compass, dating from c. 1904. Although there are no maker's marks, this is a well known Barker design which the company supplied to several prominent scientific instrument retailers, including Negretti & Zambra, London, Kelvin & James White, Glasgow, and Davidson & Regenstreif, Cairo. The compass featured in the 1909 Negretti & Zambra catalogue, where it was described as 'Prismatic Compass,
