On Fri, 28 Nov 2003, Edley McKnight wrote: > This idea seemed interesting enough I thought you might like it. > > Stab Dial - Date Grooves > > This is an idea for a dial that I like very much. > > Having taken the column and created the equatorial stab dial on > it with time settings much closer than hourly, I?d like to do the > following: > > If the column is small enough to fit on a lathe, cut declination > slits with a narrow tool, angled properly and deep enough to > restrict the light angle sufficiently. > > The ?waffle? finish would provide date and time information > without a separate gnomon and should look quite decorative. > > Now, how could I do this to make it a standard time dial as > well?
If I understood correctly the original column design, you only need to rotate it around the polar axis to correct for longitude and EOT. This is basically equivalent to an Equatorial dial... Dave 37.28N 121.97W -
