Thanks Robert. Glad to hear my memory wasn't playing up.
Funny how you can recall bits from years ago quite easily, but if you asked me what I did last weekend, I'd really have to think about it. I guess the risks from paternosters all hinged round the precise timing of getting on and off. The slightest hesitation or delay would mean a drop of a foot or so into the car or onto the floor. I found it a little unnerving at first, but accept once you got used to it, it was OK.
I worked for four different connector companies between 1972 and 2000, but would guess the most likely one that manufactured military spec products would have been in the early '70's. We were involved with all the GEC Marconi sites, Basildon, Borehamwood, Romford (or was it Ilford?), St Albans, Chelmsford in my patch alone.