The intent of this ILC/PT is to provide a means for the participant to determine the appropriateness and effectiveness of participant practices, training, and measurement uncertainty relating to the calibration laboratories competence in the measurement of a set of length standards.
These tests consist of micrometer setting standards in ranges of 1 inch to 5 inches, another test with standards from 6 inches to 11 inches and a set of three longer standards from 17 inches to 33 inches.
Reference values are obtained by mechanical comparison. This program is suitable for participants who calibrate micrometer setting rods or similar length standards, whose uncertainties are not significantly smaller than the typical reference uncertainties, and who calculate their uncertainties per the method of the ISO GUM.