Yes, Isfahan is on my bucket list too. In the news for the wrong reasons these days unfortunately.

Yeah. So disheartening. Wish you are able to one day and wish none of those have sustained any damage. Many have, in Tehran.

By the way you might like making kaleidoscopes.

I have found using compass and ruler only methods much more accurate because I don't have a drafting board or anything. The usual school supply rulers are not finely graduated enough to rely on them. In fact they aren't long enough for my purposes (although I can get a longer one if I want. The fun of deducing compass constructions is its own reward).

Even simple things such as drawing a parallel can become insufficiently accurate. With compass and ruler, much better. Ideally one should have drafting board and T square.