Seriously clever sundial makes Stonehenge look very old hat; I so like that it has no moving or electronic parts yet it displays the time digitally: http://www.gizmag.com/digital-sundial/41099/
Amazing Sundial
The Ultralight Hiker
Ultralight hiking, backpacking, bushwalking, deer hunting, canoeing, pack rafting, tips, trails, adventures, gear, reviews...Over 1600 posts & 70 years' experience.