Arnold, John, c1736 - 1799 (watch and chronometer maker)
Person
Found in 2 Collections and/or Records:
Item
Astronomical observations made at the town of the Cape of Good Hope, 1772-10-31 - 1772-11-16
Item
Reference Code: GBR/0180/RGO 14/57: 12r-14r
Scope and Contents
The observations begin with a note on setting up his instruments on shore. Included are daily astronomical observations, observations for determining the variation of the magnetic needle, and observations of the rate of Clocks B and C, and of Watch No. 1.
Dates:
1772-10-31 - 1772-11-16
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
Entries for October, 1772-10-01 - 1772-10-30
Item
Reference Code: GBR/0180/RGO 14/56: 21v-28v
Scope and Contents
Daily entries for October, travelling towards the Cape of Good Hope. A number of entries include measurements of lunar distances from the sun, Aquila and Aldebaran, along with resulting calculations of longitude. An entry for 5 October records that Arnold’s Watch No. 2 was losing considerable time and that the second hand was pausing for intervals of a few seconds [RGO 14/56: 22v]; estimations of longitude by timekeeper were thereafter recorded by Bayly in the log book based on Watch No. 1...
Dates:
1772-10-01 - 1772-10-30
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).
Additional filters:
- Subject
- Table Bay 1