Test Equipment Anonymous

I bought this about 20 years ago for a few quid. I think I was lured by the five Nixie tubes.
When I got it I'm sure it worked, but it was too big for regular use, and for my purposes did nothing a handheld DMM couldn't do. So it gathered dust for many years. It has banana sockets and curious socket for a probe of a sort I can't recall having seen anywhere else.

I tried it recently and all it does is display 01110 no matter what the setting. I've had the covers off and there's nothing obviously wrong. It doesn't seem to have a Weston cell inside, it might, I haven't looked that closely.

The only reference to it I've been able to find is an advertisement in the December 1970 Wireless World. Web searches show no mention on forums, no pictures and no documentation of any sort.

It seems a shame to break it for the Nixie tubes, and use the case for something else. If I can't do anything with it, I'll probably put it back to gather dust.

Does anyone know anything about this at all?

No knowledge, but I would be heretical...

1. check PSU, but that goes without saying
2. flush switches with IPA, maybe DeOxit
3. percussive maintenance
4. flog it on fleabay, with "nixie" and "driver" in the title

But then I have a working nixie DVM, so I'm only looking for numitron and weirder displays now. No, dekatron isn't weirder

In general, any Weston cell would not be internally connected, except when doing a calibration.

Thanks.

I haven't been able to find any documentation on Racal Nixie tube voltmeters. I guess they felt obliged to have a go at the market, but others such as Solartron and HP were well established, and Racal only sold a few.

I bought this because it had Nixie tubes and was cheap. Usually it's a firm policy not to buy TE unless I'm sure I can get the manual or better, it comes with a manual.