It sounds like something a plumber might use, but it's actually a prescription I've just picked up from the chemist; it's for measuring my breathing capacity.
I went to see the nurse at the surgery this morning because I've had this annoying cough for five weeks now and really need to get it cleared up before the hayfever season starts.
She was very reassuring, but nonetheless still told that there is currently no treatment available and so I'll have to see her again in a fortnight's time and take my results with me.
