Fellow Shadow Watchers,
In the dark days following the
Christmas season, if you are ever curious about how the multiplicity of
lines on a double horizontal dial are interpreted, a brief alternative
to the comprehensive "The Double Horizontal Dial" by John Davis and
Michael Lowne, published by the BSS <
http://www.sundialsoc.org.uk/publications.htm >, will be found in the
new blog of John Hayes at:
http://www.jahayes.com
Tony Moss
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