Newcastle upon Tyne
Found in 10 Collections and/or Records:
Correspondence on time balls and signals, 1858 - 1860
Correspondence on time balls and signals, 1861 - 1866
Explanation of the polar compass constructed by William Casson and John Minto, 1805
Correspondence regarding the effects of magnetic variation on the mariner's compass, the use of magnetic variation to establish longitude and the cause of magnetic variation.
Letter from George Dippie concerning a universal sea table, 1817-05-31
Correspondence regarding miscellaneous schemes and inventions.
Letter from Robert Spencer to Peter Elmsley, 1799-06-04
Letter from Spencer, a librarian at the Literary and Philosophical Society in Newcastle upon Tyne, to Elmsley, a London bookseller, in which he outlines 'nautical theorems' for navigation which he wished to present to the public.
Letter from William Martin on a machine to ascertain longitude, 1817-09-03
Sent to Captain Thomas Hurd.
Papers on engineering and inventions, 1873 - 1875
Papers on time balls, 1885 - 1910
William Graham on the cause of annual variation in magnetic variation and two methods of determining longitude, 1787 - 1788
Correspondence regarding the effects of magnetic variation on the mariner's compass, the use of magnetic variation to establish longitude and the cause of magnetic variation.