As I mentioned the other day, I typed the figures from Waugh's book into a spreadsheet (Excel) so I could play with them. Not nearly as neat as the programs you folks have been mentioning, I'm sure, but if you enjoy making the magic happen yourself, I have put the spreadsheet up at my website. You can retrieve it from the bottom of the page,
http://www.angelfire.com/ca2/tech3d/sundial.html if it happens to be working. 8-) You can strip off the columns to the right in the spreadsheet where I did some doodling and put in your own columns. John B
