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Admiralty Compass Observatory, 1842-1971 (Manuscript) 1968 ACO/S&T/24/3

Installation Specification for SINS (Ships Inertial Navigation System) Mark 1.

Admiralty Compass Observatory, 1842-1971 (Manuscript) 1957 ACO/S&T/11/11

Rates of Turn Indicators, 1957 Trial 57/N1.

Computations for the values of "P" and "C" for HM Iron Troop Ships, n.d. (Manuscript) ACO/4/4/3

Computations for the values of "P" and "C" for HM Iron Troop Ships, n.d.

Computations of the Values of "P" and "C" for composite built HM ships, n.d. (Manuscript) ACO/4/4/5

Computations of the Values of "P" and "C" for composite built HM ships, n.d.

Admiralty Compass Observatory, 1842-1971 (Manuscript) 1944 ACO/S&T/11/17

Report on the examination and test of Magnesyn RI Compass Transmitter manufactured by General Electric Company, USA, DRX-76-44.

Various items of correspondence, including Harrison's letter to Sperry, offering to sell his patent rights, Letter from Rowlings to the Committee of Enquiry 1927, a note on contracts with S.G. Brown for six Gyro-Compasses 1921. (Manuscript) ACO/4/23/15

The "S.G. Brown Affair", Various items of correspondence, including Harrison's letter to Sperry, offering to sell his patent rights, Letter from Rowlings to the Committee of Enquiry 1927, a note on contracts with S.G. Brown for six Gyro-Compasses 1921.

The "S. G. Brown Affair", Initial statements made by Professor Sir James Henderson covering the "History and Operation of the Gyro- Compass" for the benefit of the committee, n.d. (Manuscript) ACO/4/23/13

The "S. G. Brown Affair", Initial statements made by Professor sir James Henderson covering the "History and Operation of the Gyro-Compass" for the benefit of the committee, n.d.

Petition to the Government by S. G. Brown and Mrs Alice Brown for re- instatement in their factory, 1940-1; Memorandum giving case background, full correspondence with Admiralty and some supporting documentation. (Manuscript) 1940-1941 ACO/4/23/18

The "S. G. Brown Affair", Petition to the Government by S. G. Brown and Mrs Alice Brown for re- instatement in their factory, 1940-1; Memorandum giving case background, full correspondence with Admiralty and some supporting documentation.

The "S. G. Brown Affair", Henderson's claim, 1927, to the Royal Commission on awards to inventors (Manuscript) 1927 ACO/4/23/10

The "S. G. Brown Affair", Henderson's claim, 1927, to the Royal Commission on awards to inventors

The "S. G. Brown Affair", Statement by Henderson on the effect of the H/R Patent (in USA) on his own application, n.d. (Manuscript) ACO/4/23/8

The "S. G. Brown Affair", Statement by Henderson on the effect of the H/R Patent (in USA) on his own application, n.d.

The "S. G. Brown Affair", Affidavits by Harrison and Rawlings contesting Henderson's claim against their patent in the USA, n.d. (Manuscript) ACO/4/23/9

The "S. G. Brown Affair", Affidavits by Harrison and Rawlings contesting Henderson's claim against their patent in the USA, n.d.

The "S. G. Brown Affair", The Harrison/ Rawlings Patent as filed in USA, by Sperry, n.d. (Manuscript) ACO/4/23/6

The "S. G. Brown Affair", The Harrison/ Rawlings Patent as filed in USA, by Sperry, n.d.

The "S. G. Brown Affair", Correspondence, setting up the Admiralty enquiry under Admiral Philpott, n.d. (Manuscript) ACO/4/23/1

The "S. G. Brown Affair", Correspondence, setting up the Admiralty enquiry under Admiral Philpott

Foreign Papers on Compass Correction, M. Bisson's Compass Deviemetre,n.d. (Manuscript) ACO/4/21/2

Foreign Papers on Compass Correction, M. Bisson's Compass Deviemetre, French, with comments by Creak, in English, n.d.

Foreign Papers on Compass Correction, Compass Compensation by Means of Vertical Soft Iron Cylinders,1884 (Manuscript) 1884 ACO/4/21/3

Foreign Papers on Compass Correction, Compass Compensation by Means of Vertical Soft Iron Cylinders, from Annalen der Hydrographic, 1884, In German, with a translation by Creak

Admiralty Compass Observatory, 1842-1971 (Manuscript) ACO/5/18/2

Holmes Mag- Gyro Master compass for aircraft and M. T. Boats, n.d.

Admiralty Compass Observatory, 1842-1971 (Manuscript) 1889 ACO/5/16

'Theoretical elements of compass', 1889, M. E. Guyon, translation

Admiralty Compass Observatory, 1842-1971 (Manuscript) ACO/5/17

DG Compass Correction, Sir John Cass College, Nautical school, n.d.

Admiralty Compass Observatory, 1842-1971 (Manuscript) ACO/5/19

Sun Compasses, Instructions, extracts, pamphlets and diagrams, n.d.

Admiralty Compass Observatory, 1842-1971 (Manuscript) ACO/5/18/4

Holmes miniature repeater compass

Admiralty Compass Observatory, 1842-1971 (Manuscript) ACO/5/8

Brief Histories of the Compass Department