The third 'bargain item' was the most expensive at $25 cdn. It was
again by Northeast Electronics, but this time, no mention of
Northern Telecom on the device proper, although there are some
stickers tacked on (calibrated some time in 1982). Maybe this device
predates Northern Telecom's purchase?
Interesting to note also, above the big needle is a 'last calibrated'
sticker. Seems this was last checked in 1991. Surprisingly recent, I'd
say.
Here's the box. This was the heaviest of the three.
The reason is that both the top and bottom have gear in them, and no
room to store your cables. The top piece has a full rotary dial wheel,
and the bottom piece has a nice big meter. Lots of switches and
dials.
Here's a look at the bottom half.
And here's the top.
A better angle of the top. The rotary piece has an adaptor so that it
hooks into the bottom half. Looks like you could use it to dial a phone
pretty easily...
Back to the bottom. You can see where the adaptor plugs in.
Right hand side of the bottom half has some cool switches..
Here's the big dial. That's 'pulses per second' I'd guess. Most of
this aparatus looks like you're testing the timing of pulse-dial senders
and receivers.
Scanning the bottom we have most of the interface.
Inputs for loop signalling and E&M signalling...
And the bad news, this one also (like box 1) takes
a 48V power supply.
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