Noctural Star Dial
by zerocool5878, published
This thing is still a work in progress. At this point I think I can share this sketchup files in hopes that someone may want to make it more readable and make it more appealing. As long as the angles are not compromised it should function properly. I will likely print this out as is this weekend just to see how much more work it needs.
I have not decided on the way I am going to mount the pieces together. I am thinking about using a threaded hollow rod and nuts but im sure something printed could be done as well.
This Star Dial is intended to tell time at night without the use of a watch. It is something they used hundreds of years ago but still works the same way.
Note: As far as I know this will only work in the Northern Hemisphere. Also when holding this to the Sky it should have JD to the top.
This thing was designed using instructions for a paper star dial here http://www.ehow.com/how_12003496_make-nocturnal-stardial.html
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Print 4 pieces Assemble Set Date Hold the unit with JD to the top and Look thru center and find the North Star Move the outter dial to point toward the 2 stars at the top of the big dipper
Read the dial and you know the time.