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Sun dials

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Wikipedia's article on sundials has the formulae you'll need to find the spacing between the hour lines. Or were you looking for something else?

Has anybody got any information about how to make a sun dial?


The book I like is 'Sundials" by Mayall and Mayall. Originally published in 1938 and republished in 1973.
It covers all the formulas for Horizontal, vertical and inclined sundials.

Good morning Philip

There are a couple of versions of a bowstring sundial in the September 2004 addition of the Blacksmith's Journal #164. I have not attempted to build it; however it is on "The List". Issues are downloadable, some clubs have copies to check out, and I have found them in public libraries, I usually needed to use inter library loan.

Blacksmith's Journal
grant

Take a look at a Analemma sundial.
It looks like a figure 8 sketched on the floor or other surface.
It reflects the march of the sun on a rotating (inclined) sphere in elliptical orbit

They are a little easier to build and you can have a lot of fun with the numerals as you can really spread this sundial out to cover some square footage.

The gnomon is usually vertical

If I get the chance today and can find the how-to, I will put it up here. Might have to set it up in the gallery. It was made by Bill Clemens from our guild and put in the newsletter. Bill is an incredible smith.

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