Gazotron IN-12B  
Written by Accutron on 2017-03-20  

The Gazotron IN-12 is the Soviet equivalent of the ubiquitous Burroughs B5991/8422 rectangular end-view Nixie tube. Like the earlier IN-1, the IN-12 has an 18mm digit height, but has a much better tube-to-digit size ratio. Although the IN-12 is compatible with the B5991 socket, the presence of an underside nipple restricts it to sockets with a centrally located hole.

The IN-12 was manufactured in two variants: the IN-12A which does not have a decimal point, and the IN-12B (pictured here) which does.

Gazotron IN-12B Nixie tube under normal operation.

This article is part of the [Vacuum & Gas-Filled Displays] exhibit.

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