This clock features New Old Stock, Russian made, IN-12 nixie tubes. These are stylish, high quality, military grade and long life tubes with large 19mm (0.8") digits. Unlike most nixie tubes, the glass envelope is an oval shape and viewed head on which means they can be fitted close together for easy reading and the case height can be kept to a minimum.

The case was professionally manufactured from a deep ruby red, translucent acrylic (Plexi, Perspex with all edges polished), which allows the wonderful nixie display tubes to shine through. You also get to see the tubes glass envelope and the printed circuit board through the red case.
Switches on the back select 12 or 24 hour modes and set the time.

Manufactured in Europe and the USA in the 1960's and 70's and in Russia up to the early 90's nixie tube displays predate LED and LCD displays and have a real "space age" look about them.
Inside a glass tube, ten solid metal cathodes are shaped to form the digits 0 - 9 which, when lit, give off a warm orange / violet glow that can be read from quite a distance.
With modern displays we have become used to straight lines forming the digit segments - a zero is displayed as a rectangle - but as each nixie tube digit has its own individually formed number, curves can be used, so the figure "8" is a figure of eight shape... not represented by a square on top of a square!

The numbers in the tubes are stacked in front of each other, so as the seconds increase the digits seem to jump from front to back increasing the animation of the display.

We have clocks like this one that have been running for over 5 years with no signs of the IN-12 tubes ageing.
The IN-12 tubes fit in sockets so they can be easily replaced.
If you would like a spare set of tubes please contact us for a price.

Technical info:
Internal crystal, accurate to within a second or two per week. For safety the clock is supplied with a UK 3 pin, regulated 12v 300mA "wall wart". I can supply a European or American type at no extra cost.

Dimensions (approx.):
Clock case including tubes: l. 7" (180mm) x d. 4" (100mm) x h. 2" (48mm), digit height approx. 0.8" (19mm).

Shipping:
USA: $15.00 small packet air mail, OR, $25.00 international signed for - insured.
UK: £3.10 1st class, OR, £6.70 Special delivery - next day insured.
EUROPE: £6.50 small packet air mail, OR, £10.20 airsure - insured.