Original Date: 11/03/1996
Revision Date: 01/18/2007

Located within the Oak Ridge Metrology Center at the Y-12 Plant is the Moore Coordinate Measurement Machine (CMM) with a measurement uncertainty of between 12 and 70 millionths of an inch depending on part size, complexity, and material. The machine has a volumetric working envelope of 55 inches by 48 inches by 51 inches (X, Y, and Z axis respectively), and a table load capacity of over 1.75 tons. Average room inlet air temperature is maintained to within 0.009°F of the set point with the stratification of air temperature staying within 0.09°F. The National Institute of Standards and Technology (NIST) has stated that, "The M-60 represents a unique asset in the field of precision dimensional measurement, potentially the most accurate CMM of its class in the world." The machine is currently being used by NIST to expand their calibration capability for U.S. industry to include long end standards and step gauges. Previously this capability was available to U.S. industry only from European calibration laboratories.

Using the M-60, the Oak Ridge Metrology Center is the first laboratory to be National Voluntary Laboratory Accreditation Program (NVLAP) accredited for calibration of long end standards and step gauges. Development work is underway to establish formal uncertainty statements for two dimensional measurements which will lead to the expansion of the calibration service to two dimensional standards. Once this is completed, the Y-12 Plant will begin work to establish calibration service to three dimensional standards.

For more information see the Point of Contact for this survey.