The Engineering Metrology (EM) Group of the Precision Engineering Division (PED), one of five divisions of the Manufacturing Engineering Laboratory (MEL) at the National Institute of Standards and Technology (NIST), supports the division's mission with a concentration on measurements of one millimeter to one meter. These measurements are often of complex shape, such as turbine blades, threaded fasteners, and gears. Measurements are made by general and special-purpose feature and coordinate measuring systems.
Selected Publications on Dimensional Metrology
MicroFeature Calibration Development — This project will develop and provide high accuracy metrology for an array of high value products in medical, aerospace, automotive, energy, and biotechnology fields that include small features …
Optical Comb and Refractometry — This project will advance the realization of the meter through the use of absolute refractometry to achieve below one part in 108 accuracy. This will reduce a major uncertainty source in high …
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Measurement Services provide industry with accurate and timely dimensional calibrations to enhance U.S. productivity and quality. To accomplish this objective, the Dimensional Metrology Program has a carefully selected array of ongoing calibrations and a series of scheduled improvements for maintaining state-of-the-art dimensional metrology.
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Moore M48 Coordinate Measuring Machine.
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An array of high value products in medical, aerospace, automotive, energy, and biotechnology fields have small features that range from 10 µm to 1000 µm in size. To develop and provide the high accuracy metrology needed to measure these features, the EM group has recently deployed a second Moore M48 high accuracy CMM dedicated to microfeature calibrations that will provide accurate microfeature metrology with 100 nm or less uncertainty.
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