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What does a vacuum probe do?

As you filed this thread under "Darkroom Equipment", it is now your turn to think of a useful application of this hollow needle for our field...
 
Potentially for a vacuum sheet film holder. Of course, a visit to any serious hardware store or hobby shop would provide you with the necessary miniature brass and vinyl tubing for about the cost of a hamburger.
 
AgX said:
As you filed this thread under "Darkroom Equipment", it is now your turn to think of a useful application of this hollow needle for our field...
Click to expand...

Maybe I am being a bit dense right now, but I am not sure I understand. Did I post in the wrong place, or this thing is useless?
 
I consider it useless for our applicationas.

It is only useful where one has to prick such sealed envelope and establish a vacuum (again), and such envelopes are not used by us, nor make sense.
 
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