DOUBLE ANALEMMATIC DIALS
In these dials, one stands on the appropriate point on a month scale and one's shadow falls on a hour point. These points are on a an ellipse, which is the projection of the equatorial circle onto the ground. By splitting the ellipse into morning and afternoon and giving each half a separate month scale, it possible to make a mean time dial.
Brian Albinson at Highlands School - 2010
Pierre du Pont 1939 - Longwood Gardens Pensylvania
Longwood GardensDial corrected by Kenneth Seidelman correction to Longwood Gardens Dial in 1978
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In Australia, there are a number of single analemmatic dials (or, as they called there, "dials of human involvement"). Here the normally straight month-marker line is replace by an analemma with the months marked along it. This method makes attractive dials - but theoretically they do not give mean time.
1996 : Beautiful analemmatic dial near the Beach at Torquay, Victoria, Australia. It is a mosaic comprising more than 120,000 Italian glass Tesserae tiles. The mosaic represents the traditional dreaming stories of the indigenous Wathaurong people, with images of flora, fauna, marine environments, star constellations and local aboriginal stories
MOVING STYLE EQUIANGULAR DIALS
Wil Kerkhof wkerkhof@antiqueclocks.nl Self Aligning Double Foster-Lambert/Analemmatic Dial - 2013
S.Wetzel, ??? , Foster-Lambert Dial
James Richard, Vertical Equiangular - ca 1995
Yvon Massé, Mean time Analemmatic Winter & Summer Dial : Ref NASS Compendium Mar 1998
Prof Frederick W. Sawyer III's Wandering Gnomon Dial - 2016 : Ref NASS Compendium v21(2) June 2014
Gordon Taylor - 1975 - Herstmonceux Castle, Kent, UK : Foster Lambert Dial
Mac Oglesby - 2003 - Declining Forster Lambert Dial : Ref NASS Compendium v10(4) Dec 2003
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