Forgive me if this isn't the correct place to ask or if this has been answered before, I searched and could not find the answer.
I got myself a second hand 0.002 mm Verdict test indicator, and I'm having some trouble measuring to any degree of precision -- the indicator seems to have about a 0.01 mm delay before the needle starts moving at all, in either direction. This is with a sufficiently preloaded lever. When I shim up one side of a known flat block, and sweep across the block, the needle does not budge until about halfway through the block. After that, it behaves as expected. Similarly changing direction and sweeping the other way around does the same thing.
I have considered this might be flex in my holder, but touching or even very lightly tapping the indicator does not produce needle movement.
I believe this is called hysterisis error, and is to some degree unavoidable, but 5 divisions seems way too much for the indicator to be usable. Does anyone have ideas on how to fix/deal with this?
I got myself a second hand 0.002 mm Verdict test indicator, and I'm having some trouble measuring to any degree of precision -- the indicator seems to have about a 0.01 mm delay before the needle starts moving at all, in either direction. This is with a sufficiently preloaded lever. When I shim up one side of a known flat block, and sweep across the block, the needle does not budge until about halfway through the block. After that, it behaves as expected. Similarly changing direction and sweeping the other way around does the same thing.
I have considered this might be flex in my holder, but touching or even very lightly tapping the indicator does not produce needle movement.
I believe this is called hysterisis error, and is to some degree unavoidable, but 5 divisions seems way too much for the indicator to be usable. Does anyone have ideas on how to fix/deal with this?