The CD14 nixie symbol tube made by Rodan-Okaya of Japan. It has the symbols +, −, × and ÷. It has the same form-factor as the CD11, so the digits are around 19mm. This particular tube was slightly damaged – the silver casing was loose and easily pulled off, so you get to see what this, and other similar tubes, look like ‘in the raw’. This was easily fixed.
I find this ridiculously addictive to look at!
| Digit size | 19mm |
| Min current | 1.5mA |
| Max current | 3.5mA |
| Base | TSB-14P |
Datasheet:
1970_D4512-AA-1