That's a strange thing to stop making. Obviously someone must have crunched the numbers and figured out that it wasn't worth making anymore, but this looks extremely useful to me.
Don't most multiconductor cables already come with the wires labeled anyways? Then usually maintenance team would add their own labels onto the wires too? Or maybe I don't understand the purpose of this device, but seems to me you are trying to match one end of the wire to the other. Or are you searching for a device that detects whether a cable is live or not?
Alive15
It's not for multi- conductor cable.
It's when you pull a bunch of individual control wires, motor wires or whatever to central point from the main control cabinet for example. You have say 30 red THHN wires that need identification..
If traversing the distance between the ends is time consuming or difficult, that tool makes identifying the wires a lot more efficient for one person.
In my current role, I normally don't have a ton of wires or a great distance between terminations so I will use my Fluke on continuity check (with the beeper) and ground one wire at a time, find it, mark it, walk back and forth, rinse and repeat. The extra time I waste probably would pay for that tool after about 3 incidents of this procedure.