Mural circle


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(Astron.) a graduated circle, in the plane of the meridian, attached permanently to a perpendicular wall; - used for measuring arcs of the meridian. See Circle, n., 3.

See also: Mural

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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President James Madison signed the declaration of war, Royal Astronomer John Pond and other scientists gathered at the Royal Greenwich Observatory near London to watch the summer solstice and collect data using a newly installed 6-foot mural circle. A mural circle is a telescope on a circular frame, mounted on a wall and aligned north/south.
Navies, Natives & Napoleon the war of 1812 in Context-part 2: last issue, we learned that much of the reverence we hold for our War of 1812 "heroes" is misplaced, and that time has led to the creation of myths with little basis in fact. As the war between Britain and France raged on the European continent, its impact was felt across the Atlantic, affecting the North American conflict
This led to the making of a mural circle for transit observations.
Meeting of the Historical Section held at Soho House, Handsworth, Birmingham on 2012 May 5
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