At the risk of perhaps over-stating my argument (about how cool I think it is, that info of this high a quality level, and a usefulness level, was available in a commonly-available hobbyist publication, in the early-to-middle 1980's time period) I will offer the following scans, from that same back issue of FSM. Here's the one-page article about using an early (pre-modern-type-of-a-"PC") home computer, to type in a listing, and save it onto floppy disc; so you could do scale conversions. This was an article (as you'll see) by a different author -- but just one page after Merriman's article had ended, here's FSM telling users of things like the Commodore 64 home computer, how to use the hardware they had, to do cool things within the context of the scale modeling hobby.
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And here's some higher-resolution detail images, from that same one-page article:
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To put this into further perspective ... if I'm remembering my history correctly, as far as when guys like William Gibson (and various cool other authors, of course) were creating the fictional "Cyberpunk" genre of short stories and novels, and what equipment those authors had, when they were writing their still-famous stories, the hardware seen above was something that was available at that time period ... but a lot of them didn't have even THAT much technology, in their own homes! (I believe I likely still have a letter from Cyberpunk author, Pat Cadigan, thanking me for having thanked her, about one of her cool novels in that genre. A novel that she wrote, if memory serves, several years later than the stuff seen here, from the pages of FSM. It was, I believe, printed out on a dot matrix printer ... even years after this article in FSM.)
So there. Some folks say that David is too this, or too that ... or that he brags too much on his own self. Nah. My opinion, as one of the guy's he's put up with, and mentored, over the last couple of decades, is that David "has the receipts" showing how good he is; and for how long that has been the case. But if you're here, checking out this multi-page message thread, and seeing many examples of David's more-recent work, you likely already knew how good he is.
And no, he didn't put me up to saying any of this. I just figure "credit where due" is fair play.