Next message: Brooke Clarke: "Re: leap seconds a navigational hazard, says expert"
On Sat, 9 Aug 2003 13:37:34 -0700, Brooke Clarke wrote:
>I made one of these by placing a metal plate at the lower end of a South
>facing skylight and using a 3x5 card with a number of concentric
>ellipses and a small hole at their center. I just tracked the Sun's
>image with the card and at exactly noon stopped and drive a small brad
>nail into the hardwood floor. After many years there would be more than
>one nail for the same date because as we go through the 4 years of the
>leap year cycle the timing is a little different.
>
Thank you. Got it now ... not all the details, but the general idea
... and will visit your referenced sites. I read too much into your
comment, and was thinking of 15 second accuracy at any daylight hour.
A bit difficult, I thought. :-)
Did you sand the (copper or steel?) brads flush?
--
Richard ...
