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Barrow, John, Sir, 1764 - 1848 (1st Baronet, Secretary of the Admiralty)

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Mark Watt on improvements in the construction of compasses, 1827

 Item
Reference Code: GBR/0180/RGO 14/43: 536-544
Scope and Contents From the File:

Correspondence regarding the effect of magnetic variation on the mariner's compass, the use of magnetic variation to establish longitude and the cause of magnetic variation.

Dates: 1827
Conditions Governing Access: From the Management Group: Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).

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