Thanks for your reply.
No I haven't checked the spirit level as I assumed that they're incapable of being faulty (what can possibly go wrong with a bubble in a glass window?) but I do take your point and should perhaps borrow a friends'.
I don't see how the bath can be faulty as I didn't...
I am struggling to re-fit a bath. Although the spirit level shows a level fitting in all directions I get a pool of water building up in the far corner below the shower head. Once this reaches a certain depth it runs across the head of the bath and onto the floor!
Any tips on levelling a...