"Pinocchio Doesn't Work Here" or Almen Gage Repeatabilty & Reproducibility

Author:  Jack Champaigne
Source:  The Shot Peener magazine, Vol 07/Issue 1, Spring 1993
Doc ID:  1993120
Year of Publication:  1993
Abstract:  
Suppose your shot peening specification calls for an intensity range of 14 to 16A (.014-.016A). How much of this range (tolerance) is consumed by Almen gage errors or variations in readings? Greater than 30% is generally unacceptable and you must either increase the tolerance or improve your gage. Less than 10% is considered good.