Here’s a handy little levelling thingy. You can pick them up for a couple of quid (try ebay). Install it by putting it on the kitchen worktop or a table in the orientation you want to fix it, as I’ve done here for instance. The van doesn’t have to be level, by the way. Just mark the edge of the bubbles using a felt tip or similar on the vials and place it on the dash board in a place you can see it whilst levelling using the wedges. Try to get the edges of the bubbles as close to your marks as you can as even a little variation makes quite a bit of difference when levelling the van. Draw or mark round it when in the right position and stick it on. I used the white Gripfill adhesive to secure mine once in position as you can see. Needs cleaning up a bit…
