Alrighty, I may have fallen asleep before I could finish this last night, but I got some numbers crunched today and the actual result is absolutely not what I expected! So let me break down what exactly I did to get the heights that I did, which involved inventing placeholder units based on actor proxies to get a better sense of scale.
This will be the first of at least two (likely three) reblogs due to limits on images per reblog. It'll take me a little time, but they will all be up soon!
[Disclaimers: the results are a ballpark estimate. There are complicating factors for getting an exact height for each of them, but the results I yielded are at least pretty damn close. I also did not include the Recognizers from Uprising due to lacking a measurable real proxy to compare them to.]
First: the '82 Recognizers
The first thing I did for each Recognizer iteration was to find good screencaps to use. I ended up needing more for '82 than the latter two versions combined, since we don't get a single shot with a lone Program (or Flynn) and a full Recognizer in frame. That posed a bit of a problem, so I started by looking at these two images:
On one hand, we can see that the physical set and digital model don't match 100 percent. The ledge above their heads in the second image is absent in the first, where the 'roofline' slopes down to about the height of where the bottom of the ledge should be. Close enough for us to figure out what the height of that area should be for the digital model.
And alas, poor Ram. But what's helpful here is Flynn, since he's standing mostly upright in the entrance to the cockpit. Were he fully upright and at the exact top of the slope, it would be safe to guess that his height would more or less equal the height from the floor to the bottom of the ledge just above the entrance. Hence, the unit I used for this one was Kevins.
Then, we have this image, which is the clearest head-on shot of a Recognizer in the movie:
... the only problem being, though, that it's shown from behind. Compare that to this shot from the front, which is slightly more skewed and blurrier:
Yeah, not the most helpful on its own.
But layer the two as closely as possible?
Now we're getting somewhere. We can put in a unit line (one Kevin) from floor height to the bottom of the ledge, and start duplicating from there.
Ultimately, the '82 Recognizer was 70.5 Kevins tall. But how tall is a Kevin, anyway?
We'll round a smidge and call that 6 feet. Then it's just a matter of converting Kevins to feet, which gets us...
423 feet. Absolutely massive!