|Project by StLouisWoodworker||posted 02-22-2015 08:58 PM||828 views||3 times favorited||6 comments|
Here’s how it works: sun shines on the back of the dial, the dial markings are on glass, the markings project onto the base, there is a small brass pin located along the centerline in the base, time is read at the brass pin, the date can also be read at the pin but only roughly. The picture was taken at about 3:00 PM CST on Dec. 30, 2014. The pin in the projection is near the southern solstice at about 3:00 PM. The base is made of maple. The shape of the frame is motivated by the St. Louis arch. It is made of Australian figured red gum.
-- Don Snyder (38.6N, 90.3W)