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Douglas Combined Protractor and Parallel Rule
Douglas combined protractor and parallel rule, made by the London Name Plate Manufacturing Company Limited, used by Flight Lieutenant Edmund Bell, Royal Auxiliary Air Force Navigator.
Brass protractor, German, 1905-1914
Brass protractor (22 cm) by H. Haecke, Berlin, Germany, 1905-1914. Used on the German Survey ship, Moewe, sunk in 1914 at Dar-es-Salaam, Tanzania.
Geostrophic wind protractor, designed by Lt Cdr Ge
Geostrophic wind protractor, designed by Lt. Cdr. Albert Edgar Gendle, R.N.V.R. Royal Naval Met. Service, 1935-1945
Douglas type reflecting protractor, German, 1811-1818
Douglas type reflecting protactor in mahogany case, by Maywald, Berlin, Germany, 1811-1818. Owner: Major E. O. Henrici.
Sandhurst protractor, boxwood, with contour equivalents, shading equivalents, horizontal equivalents, length scales, degree protractor and sighting line thread/plummet clinometer
Douglas type reflecting protractor, British, 1811-1825
Douglas type reflecting protractor without caseby the Cary family, London, England, 1811-1825.
Brass plane table protractor, British, 1821-1826
Brass plane table protractor, 4.5-inch, by William Simms, London, England, 1821-1826
Semi-circular brass protractor by Lasnier, Paris, 10cm diameter, mid 18th century.
Edye type protractor, British, 1843-1873
Edye's protractor for converting angled distances to level distances, unsigned, British, 1843-1873 (?).
Tools of the Trade & Personal Accessories
Brass protractor, 360 degrees brass protractor engraved "W.H. Harling, London. James Tearse". In wooden case. 350mm diam.
Circular reflecting protractor, British, 1801-1825
Circular reflecting protractor and accessories by by William Cary, London, England,1801-1825