Almost on the level

This is the bubble level I use on my DSLR. It's unnecessary for the NEX as like many modern cameras, a level is built into the camera. I always thought this was an unnecessary gimmick, but now realise how much more convenient it is.
I'm emptying my camera bag of non-essential gear ready for a shoot at the weekend. A few back twinges have warned me that my normal 15-20 Kg may be inadvisable!