British workmen at their best
So are they saying that they have invented something that does not work very well yet because up to now no one has yet invented the stuff that it needs to be made from which sort of bends light and is invisible. However they have still managed to sell at least one of them to the Department of Homeland Security in the US and are trying to sell them to the French.
Salesman: OK the new T-ray scanner system is all installed
Customer: OK but I dont see anything. Where is it.
Salesman: Thats OK its made from invisible stuff.
Customer: But the one you showed me in the showroom wasnt invisible?
Salesman: That was a mock up made from metal and plastic and does not work.
I'll get my own coat. It might take me some time to find it as it is made from invisible metamaterials and its hung up under the plaster on the wall there behind the door.