Modification to a pocket-sized level
Date
19 June 1686
Creator
Unknown, Artist
Object type
Archive reference number
Manuscript page number
vol10 p417
Material
Dimensions
height (page): 307mm
width (page): 179mm
width (page): 179mm
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 figure was copied from LBO/10/319.
This figure was copied from LBO/10/319.
Transcription
...I must first thank you for the many Curious Communications therein: And must desire you to explain to Me a Little further the Contrivance of the Wire and pin in Mr Hook's Levell, for I must needs Confess, I doe not apprehend it, by what you tell me in the Last letter, you say, that the wire on which the weight is fixt, is to be fastened to the pin in the center (as you may see in the Margent) and not to touch the said Pin at any time.
Transcribed by the Making Visible project
Transcribed by the Making Visible project
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