Here it's a 'spirit level'. Without the spirit part, who knows.
Depends on what they mean by "spirit" , the opposite could be:
dullness level
reality level
sober level
mortal level
The fluid inside is alcohol. So without it, I'd just call it a "broken" level.
![Grin ;D](https://www.eevblog.com/forum/Smileys/default/xgrin.gif.pagespeed.ic.QVVz6XIT20.png)