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Mic'ing rods
What's a proper method of checking the inside diameter of the rod's big end. Needing accuracy within 0.0001. I bought some outside Mitutoyo micrometers to for checking the crank. And I have the plunger type to try and get a inside diameter then using the outside mic's to measure the plunger, problem is getting a consistent measurement with that method. I don't mind paying a few hundred for a inside mic but it would need to be able to use them on different applications, not just this one type of rod, i.e. case bore and rods from different types of engines.
In other words what type of mic would be using to get a proper accurate inside reading for the case and rods.
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