Whistle - or . . . ?

[Cymro]

Hi all,

My detecting buddy found this last week - I would say it's obviously a whistle (or not . . ?)

It's a bit odd if it is, though, as the right-hand end in the pic has annular grooves around it, which suggest to me that it could be a hose tail fitting. There are more, finer grooves around the body and there is a fine internal thread in the left-hand end.

After a quick scrub its function as a whistle was tried, and it does indeed whistle when blown through.

Question is, though, what is its function, as it seems to be part of a larger assembly . . . ?

Thought just occurred to me - is it part of a burner or similar?

[Chef Geoff]

My guess would be a steam whistle (the internal stem) from something like a traction engine

[DEADLOCK]

Or the flying Scotsmen 

[Cymro]

Maybe . . . It was found on land which has yielded everything from medieval to modern, so post Industrial Revolution would be no surprise, but it's the apparent hose fitting that's got me foxed.

If it was part of a steam whistle a thread at each end would have made more sense. I'll have to get it back off him and check the thread with the screw pitch gauge, which may give a clue to age (eg BSF would probably be older than Metric . . . ) That's if the blades of the gauge will go down the bore . . .