Millclock are based in Ukraine and offer a range of assembled clocks and thermometers, as well as some kits. We're going to focus on an assembled clock in this review, which is one of the more simple clocks available from Millclock.
One point before we start about the kits: There's been some negative press about the kits, but you should take that with a pinch of salt; The complaints were that the assembly was difficult because the components used are SMD (Surface Mount Devices), but that's entirely clear from looking at the pictures on the site. The complaints are a little unfair, and the Millclock site states that there is some assembly skill needed.
However, we're talking about a fully assembled and tested item in this review: The IN-12 Nixie Tube Clock With Walnut Wood Enclosure.
The package arrived quickly from the Ukraine; the shipping costs part of the price, and the priority postage that Millclock uses means that you won't have to wait very long for the clock to arrive. The clock itself was well packed and in perfect condition, well padded with polystyrene against the worst that a postal service can do. Inside the box, there was a power supply, the clock unit, and a very short instruction sheet, which covered half a side of paper. Clearly there isn't a lot to configure in this clock.
A 12V 1A power supply with a EU plug on it was in the box, and all you need to do to get the clock going is to plug it in and set the time! Very easy indeed.
The clock is very small, and is quite a triumph of miniaturization. The front panel is barely larger than the 4 IN-12 tubes, and the depth of the unit front to back is slightly larger than the height. There are two buttons on the top of the case, and a small hole in the top. This is for cooling on the pre-production unit, but will be removed for the mass production, because the clock does not produce very much heat.
The case is entirely in wood, and nicely finished, with an etched logo on the back panel, which is a nice touch. The rounded corners and the grain of the wood give the clock a nice feel. The unit is comfortingly heavy in the hand. In the front between the hours and the minutes, there is a single small neon indicator.
The unit measures 113mm wide, 44mm high and 44mm deep, and weighs about 160g. The new international Nixie measurement standard of a 100g Toblerone, which is 210mm, so that means that it's just over 0.5T wide in the new units.
There were a couple of slight problems in the final assembly of the case, but I think there are because the unit I have is an early pre-production model. They are not very serious problems: The back panel is glued on, and it does not look to be easy to change the battery. Some screws would have been a better solution, because eventually the battery will need to be replaced.
Also, on the review unit, the power lead is very short, it is only xx cm, and this means it's sometimes difficult to find a good location for the clock close enough to a power outlet. The power adaptor is glued directly into the case, and it's not possible to change it. The application of the glue was not very pretty.
Operation of the clock is quite straightforward, justifying the single page of instructions. It covers all the normal functions of a small clock. You can set the time and date, you can set the time format to 12 hour or 24 hour mode, you can turn on or off the back light, and you can set whether you want to have the date displayed. It's that simple!
Clearly, inside this clock there is a small SMD PCB which holds the electronics and the tubes. Measuring an IN-12 against the unit we can see that it looks like the tubes are mounted directly on the board, and that is not going to leave much room for electronics. My statement about the miniaturization seems to be true.
The operation is super simple, and it's perfect for a small, easy "fit and forget" clock that you might keep in an office or a bedroom. The left hand button is the "menu" button, to move between menus when you are setting the clock, and the right hand button, adjusts the setting, or shows the date when you are in normal time mode. Each time the date is shown, the display does a little scroll through animation, which also serves as a rudimentary anti cathode poisoning.
The menu is easy to understand. First press the "menu" button (the left one), and the neon stops flashing. This is an indication that you are in setting mode. Then you can press the "adjust" button (the right one) to change the settings. After you have set the hour, press the "menu" button again to move onto the minutes, and again you can press the "adjust" button to set the minutes. When you move onto the minutes, the neon stays on. This is the clock's way of telling you that you are in setting mode, and you are working on the right hand pair of digits, in this case, the minutes.
Pressing the "menu" button again takes you into the date settings. The neon is off, so we are working on the first two digits, which is the day of the month. Set this, and then press the "menu" button again, and the neon shows us that we are looking at the right hand digits, which is the month.
Press the "menu" button again, and now we move onto the year. The next option is the 12 hour or 24 hour mode. "00" means we are in 24 hour mode, which is the default, and "01" is 12 hour mode.
The next pair of options is the back light which can be "01", meaning back light on, which is the default, or "00" meaning back light off. It would be nice if the back light was turned on or off when you change the setting, but it only sets the back light LEDs once you exit the settings mode. The next setting is whether to show the date by default. This means that every so often the date will be shown automatically. "01" means show the date (the default) and "00" means do not show the date.
You will notice that there is no option to set the seconds, because this is done automatically when you exit settings mode. When you finish the setting up, the seconds are set to "00" automatically.
IN-12 tubes are super robust, so the anti cathode poisoning isn't really that necessary.
The time is battery backed, meaning that if you turn it off, it still keeps time perfectly. It's not using something like a super-capacitor, which will keep the time for a few minutes, it has a battery so that it will keep counting time as long as the battery runs, and the life of these batteries is usually measured in years. Millclock tell me that the life of the battery is rated as 10 years.
This is an excellent tiny little clock, pretty much the smallest enclosed clock that you can make with the hardy IN-12 tubes. It doesn't have a lot of functions, but the ones it has are dead easy to use, and cover what you want for a clock in an office or a bedroom. It has all the beauty of Nixies, in a small, modern package, with a high quality case. I think it's a little pricey for what it is, but bear in mind that the cost includes priority shipping and some high quality materials.
There are one or two little finishing touches which it would be nice to take care of (the glued back to the case and the missing strain relief around the short cable), but apart from that, it's a high quality, uncomplicated, accurate clock.
There is also a "dark chocolate" version available.
The guarantee is 1 year.
All in all, a nice little clock.
There is also a tear down of the clock. Bear in mind that this is a pre-production version of the clock, and the electronics looks pretty complete, but there are a few little rough edges in the case and construction. The teardown video is here: