I was trying to find space under the seat on my F650GS to install a fuse block, and an Autocom.

I tried to peek under the seat with a flash light to get a look and was getting nowhere.

What I needed was a ruler or some way to know just how much space I had to work with.

Can you say play dough, yep just roll up a shape that fits your space shut the seat, then open the seat.

And what you have is a dimension, or a shape to check out the space you need.

After installation use a very small roll upped piece, lay it on the installed part shut the seat.

This is to see just how much the seat is pushing down on part.