Ever decreasing circles...?

It's a "free" Tiny Tuesday (thanks to Loisbiz for hosting this month) so I thought I'd "level" with you all.

This is, of course, the little spirit level on my trusty tripod. I admit that I've never looked at it much but it's nice to know that it's there, although now that I have a camera with a level gauge in the viewfinder the poor thing's a bit superfluous.

The odd shadows round it just happened as a result of the way I lit it, but I quite like their shapes.