Welcome to the Test Equipment Clocks Page These clocks are all made from original 1960's / 70's test equipment that originally used Nixie tubes to indicate the measured reading. Equipment from this era was usually incredibly well made and usually 2 to 3 foot long! Each clock has been cut down to size and re-kitted out with modern electronics to give a truly original clock. If you have any old test equipment to offer, or donate then please get in touch as I'm always looking out for other projects. Current items for sale are at the top of the page, everything else in the middle has been sold, but gives you an idea of cost and what we can do. The Pipeline page here shows current clocks in progress I would suggest if you want a clock that is in progress to reserve it.


You can buy this clock from my Etsy shop Here Or give me a call or write me an email if you want different LED colours etc.

I have the Simple Meter clocks, this is by a different original manufacturer - Weiss, but also fills the brief of a simple meter clock. Plain and easy on the eye, just a simple upcycled clock.

Same as the Avo-8 it is very well made and virtually bombe proof. This one has an early cellulose type casing, somewhere in between Bakelite and Plastic. Not sure what it is to be honest!

An ideal clock for a retired electrical engineer, or something to go in your mancave.. I have a limited number of these that I can convert. I can also change the back light colour on request.

I've kept as much of the original meter as is, just carefully machined out the dial area and fitted four of the IN-12 Nixie tubes for a reliable and robust display.


You can buy this clock from my Etsy shop Here Or give me a call or write me an email if you want different LED colours etc.

Something different to my usual Steampunk clocks, this is a nice little 1960's Bakelite cased Ammeter that has been cleaned up and converted into a simple little 4 digit Nixie Clock.

Has the Brass Bad Dog Designs label on the top, and I can back light the Nixie tubes to the colour of your choice, just drop me a line when ordering. I don't have many of these left now.

The Meters were originally from Sheffield University and have now been given a new lease of life upcycled into a clock, looks very nice with the original leather handle and connectors on the front.

As you would expect, the rear is finished to the same standards as the front. The mesh is original to the meter and helped vent out any heat that built up inside when measuring current.


Not sure if I should list this under the steampunk clocks or the test equipment clocks, so it is on both! A lovely old 1950's meter turned into a 4 digit Nixie Clock.

Carefully restored, and as many original bits and bobs kept - these were used in the late 1950's at laboratories and scientific research establishements for their accuracy.

I have a limited number of these, only 4 or 5 and they are either in Milliamperes or Volts, depending on which one I pick up to convert. Both examples are shown here.

The Meters have a lovely mahogany dovetailed casing, and an original leather handle. A great clock for the man cave or to go into your study, each one individually hand made and put together.

Geiger Counter Clock - SOLD -

Commissioned Piece

'Can you convert a Geiger Counter into a clock?' I got asked.. so this is the end result. Originally a 1970's very well made French Geiger counter, so it got the treatment!

Named Vergilius by the client, the clock uses 6 of the very pretty GN-7P Nixie tubes and has the usual RGB controlled LED's fitted underneath.

In the dial, I've fitted a Dekatron tube. These were acually used in some counters to indicate the number of counts, I remember one from my old school Physics department!

The only other addition was a big red flashing light! this is linked in with the Dekatron so it flashes once every rotation. I've also had a batch of Geiger counters in, should you want one!


Every now and again, I make something other than clocks.. this is Dynamic Thermo and as you can see it is a Thermometer. This one in Fahrenheit as it now lives in the USA.

Made from an old DC Potentiometer thingy, it now has a 3 digit temperature display and a special Symbol Nixie tube to indicate the 'F' range on the RHS of the readout.

Dating back to the early 1970's the piece of equipment is made from Melamine and Aluminum, and is a type of measuring bridge used to identify unknown resistances in lengths of cable.

I do have some more of these in the workshop, so if you wanted a little thermometer to compliment your collection of Nixie clocks, then just drop me a line on the contacts page.


Commissioned Piece - Spectrum Analyzer

Something New for 2018, not necessarily the Magnox clock but the Nixie array on the top. As well as telling the time, the Magnavox has a 10 channel Spectrum Analyzer display on top.

The Client wanted the original Decade box completely untouched, so it has all the original age / scratches and even bits of old sticky tape still on it.

The Analyzer basically responds to sound, broken down into frequency bands. The lowest notes trigger the tubes on the left, and goes up in steps across the audio spectrum.

As it is audio related, I added some old radio valves and tuning can to add to the overall effect. You can see a clip here to see how it works.


You could buy this clock from my Etsy shop Here Or give me a call or write me an email if you want different LED colours etc.

I have the Simple Meter clocks, this one a little more complicated and based on the legendary Avo MK 8 Meter, known to every electical engineer of a certain age (Like me!) A great piece of Test equipment

Avo stopped making the MK 8 in the late 1980's so by my standards this is quite modern. Very well made and virtually bombe proof, this one is a military spec meter and now repurposed to tell the time.

An ideal clock for a retired electrical engineer, or something to go in your mancave.. I have a limited number of these that I can convert. I can also change the back light colour on request.

I've kept as much of the original meter as is, just carefully machined out the dial area and fitted four of the IN-12 Nixie tubes for a reliable and robust display. A nice instantly recognisable clock :)

~ The Magnox MK IV ~ SOLD

Commissioned Piece - although can make plenty more similar

The 5th in the Magnox design of clocks, although at the client's request this one is called the 'Atomic' The classic 4 tube front facing design made out of an old decade resistance box, with a flashing red light on top!

I also managed to just squeeze in a Dekatron tube into the bottom, this gives an extra visual effect as it acts as a pendulum or responds to ambient noise. Also a subtle reference to 'V' on the front.

The look of the clock is though it was made to fit in a 1940's Atomic power plant. The original equipment is 1940's with bakelite bezels and then a suitable font used for the text.

Not normally seen, the hazard warning ratings plate on the back of the clock. Suitably dangerous and would deter anyone from opening the clock with a screwdriver!


Dealing with Paul is an absolute pleasure and he endeavours to make the experience a true collaboration to ensure that any design details you can dream up are incorporated to produce a unique item bespoke to you. Any queries are met with fully detailed replies easy to understand in layman's terms and often accompanied by the relevant pictures. I have no hesitation in recommending Bad Dog Designs at all, I am thrilled with my 1st "Atomic" Nixie clock and Paul's workmanship is obviously a matter of pride to him, a fact that shines through in the finished work of art. Simon Dentith - UK


Commissioned Piece

Wasn't sure to put this on the test equipment page or this one, so it's on both! This was a little 1960's Grundig Microphone Mixer, had a little valve amplifier inside but totally none working.

Great 1960's colour and just begging to be converted into a little 4 digit Nixie clock, which is something I have had a little experience of ;-) Inside is now 4 X GN-4 Nixie tubes.

I remade the entire front panel from brass, it is the same as the original but the holes widened to accommodate the tubes, and the name of the client on the front.. Hello Les!

I kept the rear of the Mixer as it was, with all the connections for the microphones and the line out jack. Had a great deal of pleasure from putting this one together, all fitted just right.

The MAGNOX Mk IV ~ Nuclear Powered ~ clock - SOLD -

Commissioned Piece

Not made a Magnox clock for a year or so, and was delighted to get a commission to make the Magnox MK IV. This is a special one that has a Dekatron in the middle to act as a Pendulum

As the Magnox clocks are all Nuclear Powered (Hmm) as a by product you can use it to produce Plutonium 239 simply by pressing the button on the top that then starts the reaction process!

The Clock is made from an old 5 decade resistance box, originally used to determine an unknown resistance via a galvanometer, Now we use a digital multimeter set to Ohms and read it off the display.

The red light on top glows menacingly, and the time displayed on 4 of the GN-4 Nixie tubes with some white backlighting. Very usual clocks, able to make plenty more if you wanted one.

Auto Bridge Clock - SOLD -

Definately one for the Man Cave!

Believe it or not, this piece of equipment was used as a box by someone to send me a load of Nixie tubes inside, and has then been sitting in the stock room waiting to be turned into a clock!

The device was original used to determine the value of unknown electronic components, you connected to the terminals and then turned the knob until the reading balanced.

As it measured many different values, I used a small micro to make the panel with all the scientific units light up in sequence, with the speed varied by the large dial on the front.

The woodwork required a bit of care and attention, but at the request of the client I kept the front panel completely original, stickers / dirt and all as it was - makes for a really unusual clock!

Universal Avo Meter - SOLD -

Commissioned Piece

Sent in by a Customer, this is a Universal Avo meter - with the request to convert it into a little Nixie clock. Looking at the proportions of the meter it is just possible to squeeze in 4 digits.

It uses the IN-12 tubes and has a PV electronics FunKlock hidden inside. The dial plate was expertly machined out by the guys at Engraving studios.

On the rear are the controls for setting the time and other parameters, and the date when I put it together. A nice little project and easy to repeat if you have an old Avo gathering dust.

Makes a nice change not to have to chop the casing in half, one of the few older instruments that are originally made small enough!

Advance Instruments TC8 Counter Timer - £POA - SOLD

There is another Advance TC-8 Counter Timer on this page, and that is the first Nixie Clock that I made. I was delighted to get another one into the workshop to convert.

Almost made to fit a 'Halo' Kit, these are lovely to put together and easy to assemble once the casing has been chopped to size. They can be hung on the wall or sat on a shelf.

Very well made from cast aluminium that has polished up nicely, and contrasts very well with the red and orange glow from the nixie tubes and LED backlighting.

As with virtually everything electronic from the 1960/70's I've had to chop the casing down to make it more suitable to put on a shelf or the wall, this one was no exception!

Ekco Electronics Scaler M5200 - £POA - SOLD

It may not be much to look at, but this clock is a beauty, 4 large GN-4 tubes UV backlit (of course) and built from an original 1960's Scaler. Still has some chips to the paint and character!

Originally it had 5 Dekatrons to do the scaling, just the one remains, but it has been brought up to 2014 and has quite a few programmed patterns, especially the one where it turns into a VU Meter!

Lovely UV back lighting, not to over the top - just right. I've got a clip of it running here Scaler dancing to a bit of J.S. Bach I love this clock!

As you can see there is a fair old bit of wiring inside this one. Always neat but just a lot! Uses a PV Electronics FunKlock Kit for the timing and thanks to Mike for the Dekatron Genius!

Telequipment Scope S51E - £POA - SOLD

Commissioned Piece

This was a very basic oscilloscope, designed for schools and collages. 1 channel, 5Mhz on a good day - very heavy and full of valves. Now a commissioned clock!

Considerably cut down, the original scope was just under 2' long and is now about 3 inches in length. Inside is a FunKlock kit and 2 of the OG-4 dekatron tubes, each individually adjustable form the front panel controls.

I like the way that the blue tube back lighting projects a pattern of dots onto the wall directly behind the clock although you can only make it out when it is dark.

A very interesting little clock, with both Dekatrons going at different speeds and the Nixies scrolling through, there is plenty of movement to see and certainly gets noticed!

Coutant Digital Voltmeter 'Little Blue' - £POA - SOLD

This is a very old 1960's digital voltmeter, not a lot of info about it on the internet. Made by Coutant in England. I refer to it as 'Little Blue'

Originally inside were 3 1/2 tubes, so not quite enough to make a clock. I therefore fitted 4 off GN-4 tubes and it all runs from a PV electronics Quattro kit.

This had about 14 inches chopped off the back, and the casing re-folded. Very typical styling with the pale blue and the chrome handles. Designed to be hung on the wall or sat on a shelf. The two red buttons on the front are to set the time / date and other parameters.

The tubes are also backlit, you can make out a feint yellow glow eminting from behind the numbers. Very nice little clock to put together.

Advance Instruments Counter - Timer - £POA - SOLD

This was a 1970's Advance instruments Counter Timer. Originally this one was used by the RAF for servicing Avionics and radio transmitters.

It was de-comissioned by the RAF in the early 80's and put into storage. I recieved it still in the brown waxed paper, and inside a hermatically sealed bag where it had sat for 30 years.

The original instrument was about 2 foot long, so the whole bit of kit was dismantled and machined down to just a few cm thick so it can sit on a wall.

The Clock has 6 off GN-4 Nixie tubes inside and is based on the PV electronics 'Halo' Kit. This was the first Nixie clock I made for sale many moons ago!

Racal Electronics Counter - Timer - £POA - SOLD

This was a 1970's Racal counter timer, originally aquired from Ben's collectables on eBay. Very well made bit of kit and weighed half a tonne!

As per the Advance Instruments counter, this was just over 2ft long and required substantial cutting down to size. The Lid is now what used to be just the inspection panel for calibrating the unit!

The Rear of the instrument is preserved and there is a Calibration label dated 1975! All the rear panel parts are original. Likewise the front panel switches are used to set and adjust the clock.

The clock has 6 off ZM507 Nixie tubes inside, and is controlled by a PV electronics Remote Kit. You can see inside where the board is located. This clock now resides in Seattle WA.

Tiny Racal 9838 - Frequency Counter - £POA - SOLD

Commissioned Piece

This was a 1970's Racal 9839 Desktop frequency counter, uses the tiny little Rodan 116D Nixie tubes, the last model they made before moving onto LED Displays.

As you can see, with the casing cut down and the lid removed, there is not a whole load of room inside. At the rear is a PV electronics 'Remote' Kit and at the front the original Nixie Display PCB, although chopped down!

As there is not a lot of room, you cannot fit a Colon separator between the HH:MM:SS on the display, so I used the old decimal points inside the tubes.

Nice looking clock (made to order) and will be on it's way back to Chicago before long. As per usual all the original buttons on the front are used to set and adjust the clock.

HP 5246 Frequency Counter - £POA - - SOLD -

This was an extremely well made piece of Equipment, not an ounce of plastic. Completely made from cast Aluminium and Steel. The build quality is second to none, not made like this these days!

Originally inside were 6 Buroughs tubes, but I found plenty of room inside so I could fit bigger IN-12's to give a much clearer display. It is powered by a PV electronics 'remote' kit.

This is a substantial looking clock, I have not specifically made it to hang on a wall, so ask if you intend to wall mount it and I'll put some suitable fixings on the rear.

The controls to set the clock are mounted on the prescaler module. This clock will look perfect in a man cave - and will now reside in Texas.

Little Solatron Voltmeter - Red Backlight - £POA - SOLD

This is a lovely little clock, ideal for the bedside - if you must sleep next to an old voltmeter! Definiately different :)

This is based on the PV electonics 'FunKlock' and used the Russin IN-12 tubes. Fits perfectly with the proportions of the clock.

To set the clock and change the parameters, there is a little toggle switch on the front panel. Press one way to set, and the other way to adjust.

As you can see, there is a considerable reduction in size from the original voltmeter that was the donor for for this project.

Little Solatron Voltmeter - UV Backlight - £POA - SOLD

Identical to the other little Solatron voltmeter, except that this one has got UV Led backlighting for a different effect.

The original voltmeter had a red perspex front panel, this has been replaced with a clear acrylic one to show off the Nixie tubes.

Overall a very nice clock to build, and would not look out of place on any engineers study. Small and compact and doesn't take up any room.

Also in the same vein, I have 2 much larger Solatron voltmeters. These are more feature packed, tell the date etc. The first big solatron has now been sold, but I have another if interested.

Big Solatron Voltmeter - £POA - SOLD

This was a 1960's Solatron precision voltmeter. It is one of 4 Solatron units that were rescued from a colleage and hidden away in a barn for quite a while.

Each tube is backlit with a High intensity yellow LED. The clock is based on the 'Frank3' Kit and as such you can program the backlight level for each hour, or switch off all together.

The existing buttons are used to access the 4 main controls of the clock 'Set' - 'Adj' - 'Alarm' - 'DST' and the tubes used are the original ones that came with the instrument.

A very nice looking clock - has a traffolyte engraved front panel, not the usual aluminium. This clock now resides in Belgium with its new owner.

HP 3734A Counter - Yellow Backlight - £POA - SOLD

Another Hewlett Packard Counter, a bit smaller than the other one. Has a larger IN-12 tube for the hours and minutes and little IN-17 tubes for the seconds.

It is powered by a 'Frank 3' kit and just fits perfectly inside. The clock is just the right size to hang on the Wall, and beautifully proportioned.

One of the hardest things to work with is the casing where it has all the little holes punched in it, drilling a hole between the existing ones is almost impossible!

One effect of have the casing full of holes is that the backlighting projects a pattern of dots all over the wall. Picture kindly provided by it's new Owner!


“I wouldn’t change a thing about this clock, the depth of the display and richness of colour with the lighting effects is spot-on. I have it scrolling through the ‘slots’ mode every minute and the date display too so I get animation 60 times an hour. It makes me feel like I’m either in a nuclear bunker, about to engage time travel or waiting to be found at the bottom of the hatch in ‘Lost’! There are so many setup options available on this clock that there is no excuse to dislike anything at all about the clocks operation. I love the fact that this classic old counter has been given new purpose and a new lease of life. Overall, this clock is absolutely superb, I couldn’t be happier. Andy Shepherd (Notts).”