The NL8091, made by National of the USA, is a large end-view nixie tube. National sold many tubes with the same numbering as Burroughs – the Burroughs equivalent of this tube is the B8091.

Digit size 35mm
Min current 3mA
Max current 6mA
Base  SK137

For size comparison, here is a family portrait with, from the left, a 122P224 (aka B5092A), a B6091 and the NL8091:

Nixie tube family portrait
Nixie tube family portrait

All I need is the even bigger B7094/NL7094…

This is the datasheet

NL8091 datasheet

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