The CD25 is a medium sized end-view nixie tube made by the company Rodan-Okaya. Rodan are known for making the largest (and some of the strangest looking) nixie tubes in the world. This tube is similar in size to the IN-12, with the same pin-out.
| Digit size | 19mm |
| Min current | 1.5mA |
| Max current | 3.5mA |
| Base | TSR-11P |
Here are some photographs of the tube from various angles.