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III. Description of a Mercurial Level*
Published online by Cambridge University Press: 17 January 2013
Extract
Figure I. is a section of the instrument formed of mahogany or boxwood. A A are two oblong square cavities connected together by a narrow close channel, running from the bottom of the one to the other. B B are two grooves hollowed out of the wood, in order to contain the fights, &c. They are shut up by a lid, which turns upon a screw-nail at the centre C, as may be seen more distinctly from fig. 4.
- Type
- Papers Read Before the Society
- Information
- Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 2 , Issue 2 , 1790 , pp. 14 - 16
- Copyright
- Copyright © Royal Society of Edinburgh 1790
References
* This Paper was read before the Philosophical Society of Edinburgh in December 1778; and is now printed by order of the Committee for publication of the Transactions of the Royal Society of Edinburgh.