Sounds like a third-century heresy
Roger Pollack has a blog of Cold-war calculators: “A collection of calculators created during the Cold War for the use of civil defense planners and military commanders.”
I suppose you could say that a nomograph is a graphical representation of a multi-variable formula. They can be difficult to make, especially for advanced applications, and there is really little pay-off to putting in the time to learn how. Like learning to sew well, it is a skill that cannot be expected to repay the cost of learning it.
I have always liked Nomograms. I learned a little about them in high-school drafting class, and a bit of the theory in college, but it was becoming archaic. Still, even today there are alignment charts of different kinds in use. I occasionally see (or use) one in a small engineering shop or at a company that makes specialized machinery. Someone forty years ago plotted out a nomograph to select the bearings for a particular application, and it is still in use, laminated and chained to a filing cabinet. Most have been replaced with spreadsheets, or suppliers’ proprietary computer programs.
They do have their advantages. A nomograph is relatively easy to use, and hard to misuse. It only works inside a defined range, and can only be used within that range. With a spreadsheet, any goof can change the formulas or copy another row to extrapolate outside of its legitimate range of use. With a (correctly made) nomograph, you can only use it for what it has been made to do. For example, if it is set up choose bearings to operate from 60 to 200 rpm, then the speed scale only runs from 60 to 200 rpm. It does not exist where it does not apply.