Nickel plated item

[Hodddball]

Hi there this is my first what is it item it’s nickel plated brass about 7 inch long the bulb at the top has been hand stamped . There is no way of filling it from the top the screw in nozzle has a hole through it . No sign of anything inside .possible to fit a rubber tube on the end .i don’t think it’s an oiler as the bulb would be rubber . I have filled with water it will not run out due to the vacuum in the bulb ?

 

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[HuntinDog]

Sounds interesting, but we need a picture to better ID it.

and ​Welcome to TreasureNet

 

[ANTIQUARIAN]

Sounds like it's either medical or mechanical related?
But without a pic for reference, all that comes to mind is a clown nose.

Dave