A more accurate determination of γ1p through improved dimensional measurement techniques

An increase in the accuracy of the gyromagnetic ratio of the proton can be achieved by determining the magnitude of a calculable magnetic field to higher accuracy. Such an increase requires dimensional measurements of a physical object to an absolute accuracy of a few parts in ten million. A unique computer-controlled automated measurement system for carrying out such measurements has been developed at the U. S. National Bureau of Standards and is currently in operation at its nonmagnetic facility. This measurement system provides an order of magnitude improvement over all previous measurements.