Modification of a pocket-sized level
Date
19 June 1686
Object type
Archive reference number
Manuscript page number
p319
Material
Dimensions
height (page): 322mm
width (page): 204mm
width (page): 204mm
Subject
Content object
Description
On 27 May 1686, Edmond Halley had written to William Molyneux explaining a modification to Robert Hooke's design of a pocket-size level with a small figure (see LBO/30/339) showing how a wire should be fastened to a pin in the centre by a small thread (so as not to touch the pin). Here, in his reply to Halley dated 19 June 1686, Molyneux reproduces the figure to say that he does not understand Halley's instruction. The letter was read at the meeting of the Royal Society on 30 June 1686.
This is copied in LBC/10/417.
This is copied in LBC/10/417.
Object history
At the meeting of the Royal Society on 30 June 1686, ‘A letter of Mr. William Molyneux to Mr. Halley, dated at Dublin, June 19, 1686, was read, containing some remarks on Mr. Hooke’s level and barometer’ (Birch 4:492).
Related fellows
William Molyneux (1656 - 1698, British) , Science writer
Edmond Halley (1656 - 1742, British) , Astronomer
Robert Hooke (1635 - 1703, British) , Natural philosopher
Edmond Halley (1656 - 1742, British) , Astronomer
Robert Hooke (1635 - 1703, British) , Natural philosopher
Associated place