Ha ha ....... actually, I was thinking about your good-self the other day, Mr Cat. I had to find a secluded spot in our local Exchange, to do some in-depth analysis of various circuits, off various DP's, as part of a REIN case.
Whilst pondering, something caught my eye on top of one of the many locker-cabinets. God knows what it was, as I didn't want to put my back out trying to get it off the top of the locker. It weighed an absolute ton !! But, it appeared to be some old kind of equipment ??
PS ...... the REIN was tracked down to a desktop monitor. It's caused no end of grief over a 7yr span, according to the IT manager.