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Earnshaw, Thomas, 1749 - 1829 (maker of watches and chronometers)

 Person

Found in 128 Collections and/or Records:

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 Item

Sketches of islands 'discovered', rough calculations and tables, 1791 - 1792

Reference Code: GBR/0180/RGO 14/62: 71*r-150v
Scope and Contents

Set of rough astronomical calculations, with tables, notes, and sketches of islands ‘discovered’; the islands are unnamed, although reference points are sometimes given, such as ‘Island A’ [RGO 14/62: 141*v], or ‘Bay at C’ [RGO 14/62: 79v]. Interspersed among the notes are occasional doodles by Gooch [RGO 14/62: 88v], [RGO 14/62: 124r], and translations of [Polynesian] words [RGO 14/62: 124r], [RGO 14/62: 126-127], [RGO 14/62: 141*v].
Some pages are inverted in the volume.

Dates: 1791 - 1792
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).
 Item

Summaries of observations made between December 1801 and July 1802, 1801-12-12 - 1802-07-18

Reference Code: GBR/0180/RGO 14/64: 55v-60v
Scope and Contents

Includes accounts of the rates and errors of the timekeepers by Earnshaw and Arnold, and summaries of observations to determine longitude made in Princess Royal Harbour, at Bay 10, in Port Phillip Bay and at Cattle Point on the east side of Sydney Cove, Port Jackson.

Dates: 1801-12-12 - 1802-07-18
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).
 Item

Table comparing the rate of Thomas Cumming's chronometer with those by Earnshaw and others, 1822

Reference Code: GBR/0180/RGO 14/24: 368-377
Scope and Contents From the Sub-file:

Tables and notes on the rate of a chronometer by Thomas Cumming which was tested at the Royal Society and Royal Observatory, Greenwich; with three related letters from C.G. Briscoe and Cumming.

Dates: 1822
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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  • ARCHON code (for CUL materials): Royal Greenwich Observatory (GBR/0180) X

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