Another reliable Things of Science unit — this time on sundials.Of course there’s history, of course they cover the topic thoroughly, and of course there are many do-it-yourself sundials.
Again, my eBay purchase was missing the “things”, but page 3 lists them off. I think a clever person could work through the booklet the means to (re)creating the sundials presented.
Another data-full booklet:
More Things of Science scanned here.