29 Dec
2007
29 Dec
'07
12:39 a.m.
At 11:14 AM 12/29/2007, Dave Guimont wrote:
A vertical rod about 4' long (plumb it, or use a level) will have the shortest shadow at noon.
I should have said "near noon".....
You still need to know "when near noon" to within 5 minutes to get the required accuracy. :)
73 de VK3JED http://vkradio.com