one would hope over a particular dimension, so we could argue that Macs
method may give greater accuracy over the smaller area in which the
dial will be placed.
On Sunday, September 21, 2003, at 05:55 AM, John Carmichael wrote:
Ah but wait Mac, you forgot something: scale of size and precision.
If you
are using the window frame as your "declination gnomon" you are
working at a
small scale over short distances, whereas if you use the corner of the
house, the scale is huge because the declination gnomon (the corner of
the
building) is monumental in comparison. The corner of the building
will be
far more precise wont' it? And your method involves holding two tools
(a
piece of paper and pencil) and then you have to mark the paper while
looking
at a clock. And probably a couple of little geometry problems as well.
Is
that right? Seems more complicated and less precise to me.
Best regards
John Hall
41.5 South 147.1 East
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