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All Springer/NP/PCP Air Gun Discussion General > Machine Shop Talk & AG Parts Machining

Understanding valves [beginner]

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WobblyHand:

--- Quote from: Nvreloader on June 05, 2023, 11:02:40 AM ---WH
A good set of ball mikes and or half ball mikes, I use both types
called small hole gages comes in very handy,
in sizes from 1/8" to 1/2" usually comes as a set of sizes,
along with pin gages that come in several sizes,



Full ball type


1/2 ball type


HTH's
Don

--- End quote ---
I have a decent set of half ball gauges.  I find them tricky to use, however, as they have a small amount of spring to them.  On the other hand, I think I have mastered the telescoping gauges pretty well.  Usually within a few tenths from measurement to measurement on the telescoping gauges.  I had to practice that a lot when I was making a back plate for my lathe.  Bought a couple of bore gauge references to practice on.  I have a couple of different sizes, like a go no go set, which is useful for developing the correct feel for measurement.  Really helps to have "ground truth" when learning to measure inside diameters. 

Would be nice to have inside mikes, but they are out of my price range.  Don't use them often enough to justify buying them.

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