One more nostalgia - готовальня.

This is what I found at the bottom of my desk drawer. Many do not even know what it is called and what it is for. And most importantly, all the instruments are intact and the leads stick out!

This photo, of course, should be in the Creo section. But, I'm sure, and users of MathCAD will appreciate this tool, which often lay near the slide rule - Mathcad.