Have you tried the Starrett with a standard, for example feeler gages? I have a Mitutoyo, and I try it with a known dimension now and then just to make sure that it's not out of whack. If it is, I'm sure that Starrett can recalibrate it for you.
I believe the small discrepancy in the dial setting could be due to the feed screw being metric. Seems like some older machines used metric feed screws, and for the US market they simply changed the dials to read the "closest standard equivalent". These are said to be a bit iffy sometimes, so if that's the case you may want to upgrade to true standard screws and dials.
|