Skip to main content

Cambridge University Libraries are providing a blend of online and controlled in-person services. Please see our website for more details.

Papers on altitude and azimuth instruments, 1847 - 1848

Reference Code: GBR/0180/RGO 6/161

Scope and Contents

Computations and calculations for the altitude and azimuth instruments, including examinations of the pivots and graduations of the vertical and horizontal circle in the instrument; intervals of wires; comparisons of the levels to the plane and axis of the vertical circle; computation of zenith distances and tabular errors; alterations to the azimuth instruments, with a description; and plans of the instrument drawn on canvas. There is also brief correspondence with Sir F. Beaufort and J.C. Hare and an engraving of a lighthouse and seed drill.


  • 1847 - 1848

Conditions Governing Access

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 Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (


2 archive box(es) (2 boxes)

Language of Materials


Former / Other Reference


Finding aid date

2006-01-06 11:29:31+00:00

Includes index.


Repository Details

Part of the Cambridge University Library Repository

Cambridge University Library
West Road
Cambridge CB3 9DR United Kingdom

The UK Archival Thesaurus has been integrated with our catalogue, thanks to Kings College London and the AIM25 project for their support with this.