What could cause having 0% reproducibility error in a Gage R&R study? I had two operators measure parts with 3 repetitions. The repeatability error is 38% (still too high), but I don't understand why there is no reproducibility error. The specification is to the thousandth of an inch and the measurement tool can measure to the tenth of a thousandth. Any help would be much appreciated as I need to explain this in my report. I did repeat this with different operators (the original were not available), and got a combined error of 12%.