Antique Harling Brass & Steel Nautical Parallel Rolling 14" Ruler In Original Carton Container 1954

Antique Harling solid brass & steel nautical parallel rolling 14" ruler in original carton container                                               1954                                                                                   London                                                                                   In good used antique condition......see photos for further description                                                                          There is a stamp of the "Admiralty Compass Department"   dated 4 Mar 1954, on the inside of the lid

The Admiralty Compass Observatory, orginally known as the Compass Branch (1842 - 1917) and later known as the Compass Department (1917 - 1968) and Compass Directorate (1968 - 1971) was established in 1842 to provide the Royal Navy with services for the desighn, development, inspection, testing and repair of compasses and certain other instruments.  It took subsequently undertook requirements for the other services as appropriate .  It existed until 1971 when it was absorbed within the Admiralty Surface Weapons Establishment.

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