'Account of a Spirit Level to be fix'd to a Quadrant for taking a meridional Altitude at Sea when the Horizon is not visible' by John Hadley

Reference number: RBO/18/60

Date: 1733

Description

Original figure of spirit level and quadrant is attached
Read to the Royal Society on 10 January 1733

Reference number: RBO/18/60
Earliest possible date: 1733
Page extent: 7 pages
Format: Manuscript

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Citation

'Account of a Spirit Level to be fix'd to a Quadrant for taking a meridional Altitude at Sea when the Horizon is not visible' by John Hadley, 1733, RBO/18/60, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/rbo_18_60/account-of-a-spirit-level-to-be-fixd-to-a-quadrant-for-taking-a-meridional-altitude-at-sea-when-the-horizon-is-not-visible-by-john-hadley, accessed on 17 June 2026

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https://makingscience.royalsociety.org/items/rbo_18_60/account-of-a-spirit-level-to-be-fixd-to-a-quadrant-for-taking-a-meridional-altitude-at-sea-when-the-horizon-is-not-visible-by-john-hadley

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Paper, 'A spirit level to be fixed to a quadrant for taking a meridional altitude at sea when the horizon is not visible' by John Hadley
Creator: John Hadley Reference number: CLP/8ii/44

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John Hadley

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Register Books

The 'Register Books Originals' contain copies of scientific papers submitted to the Society and considered for publication. The papers were transcribed to establish their precedence for a particular discovery or idea.

Dates: 1661 - 1739

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