I have started the twelve step program for tool addicts and now have one day in a row without a single tool purchase.
Benny
Recovering tool addict and incurable Hobby-Machinist
To be fair, speaking in Metrological terms, a gage block and the DUT should be allowed to come to the same temperature (68° @ 50% RH, or 20° C) for 24 hours in order to really quantify measurement or calibration error. As an extreme example, if your block or standard was in your pocket, and the instrument was off the shelf temperature in the store, your readings really shouldn't show a zero error if the instrument is correct. The warmer block or standard is really larger than stated. If the instrument says it is right on size with the temperature differential, the instrument is less than accurate.
Jus sayin'
To be fair, speaking in Metrological terms, a gage block and the DUT should be allowed to come to the same temperature (68° @ 50% RH, or 20° C) for 24 hours in order to really quantify measurement or calibration error. As an extreme example, if your block or standard was in your pocket, and the instrument was off the shelf temperature in the store, your readings really shouldn't show a zero error if the instrument is correct. The warmer block or standard is really larger than stated. If the instrument says it is right on size with the temperature differential, the instrument is less than accurate.
Jus sayin'
Very likely both those micrometers are far more than adequately accurate for anything that might come along. If all you guys saw was a 0.00001 difference, that's outstanding and nothing to worry about. Plus point is well taken about reading the basic markings, much less the vernier scale. I'm all with you on that.