Yes, I know this is nothing new.....
I was mooching around the town market Wed and saw these...........coming in at a massive £1 each.
They are small enough to fit ontop of cd players etc and rather more handy then my usual 6 foot affair.
Accuracy, obviously isn't going to be strong point but measured about the same in each direction.
It was quite good enough to check and establish that might speakers were miles out; the difference when this was corrected prompted this post
I've got a distance meter on its way, its just goes to comfirm that speaker set up (as others have said) is so important.