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Does anyone know what's the font used in the following pictures? Indeed this math font is very common in many Russian math/physics textbooks published last century, and it appears in almost all the Russian math textbooks that I've read.

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  • Sure it's not handwritten? There was some kind of standard technical lettering before the CAD times. – Oleg Lobachev Apr 6 at 13:28
  • Hi Oleg, thank you very much for pointing this out. I found that some books with the above fonts were published around 1970, even older than the initial release of TeX. – Ce Shen Apr 6 at 13:54
  • Welcome to tex.sx. I'm inclined to agree with @OlegLobachev, that these diagrams were prepared by hand. Look carefully at the two "2"s in the second image; they are very similar, but not identical, and I don't think that's the result of a low-resolution scan. This reminds me of results obtained from using a Leroy set. (That was a commonly used drafting tool in the era before computer typesetting became available. The description linked by Oleg is the comparable tool for Cyrillic.) – barbara beeton Apr 6 at 20:27
  • OMG I forgot we had rOtring NC-scribers only as recent as 1980's (the dawn of switching from stencils to electronic lettering) pre personal word processors – user170109 Apr 7 at 0:31
  • @barbara beeton, thank you very much! There's a slight difference between the two "2"s, and now I believe that these letters and numbers are prepared by hand. According to another post and a paper, it seems that the old Russian or Soviet typographical style hasn't beem implemented hitherto. If so do you have any idea from where the original templates or stencils can be obtained? – Ce Shen Apr 7 at 10:18

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