Have a look at http://www.longnow.org/ they try to make a clock which would last 10 000 of years or more with an accuracy of 1 day in 20 000 years. I would say a sundial could do that job and even more accrate I guess. Perhaps even a new scale could be developed to indicate the millenium number. I think this should be possible because the declination is changing in time and at noon it would be possible to indicate in which millenium we are. With a sundial the people at longnow-project will also have solved the friction problem: no moving parts!
----------------------------------------------------------------- Thibaud Taudin-Chabot 52°18'19.85" North 04°51'09.45" East home email: [EMAIL PROTECTED] (attachments max. 500kB; for larger attachments contact me first)
