I remember those. My very first real job with a regular paycheck was CE at a 1 kw daytimer, and my very first malfunction was in the remote meter reader circuit. The thing used the telephone dial at the studio and the stepper relay at the remote site. What a PITA for that to malfunction my first day on the job. I had to call the engineer at another station for advice, since I had never worked an anything like that before.
Now if only they made jumbo versions of those stepping relays, complete with ceramic insulation and 3/4" spacing between silver plated contacts...
Or if only I had kept that 8" wheel and worm drive. As a matter of fact, it came from that first station where I worked, in a load of "junk" (actually a '62 Plymouth trunk crammed full of goodies) that the boss told me to get rid of after I had thoroughly cleaned the cluttered transmitter building, and that in a few days he was coming by to inspect the job.
The boss was surprised and delighted at how promptly I followed his directive.