This is an original 1/4" npt steam siphon for a gauge or control.  It is in as found very nice condition with no cracks, breaks, or repairs that I can see or know of.  It stands about 4 1/2 inches tall and has 1/4 inch npt threads that are in great shape.  These old siphons are getting tougher to find in the wild or even at swap meets with each passing year so if you've been looking for one for an authentic restoration here's a very nice one.  Let the pictures be your guide.  I can always be reached at 262 573 193 1 if you'd like to talk about it.  Good Luck.