Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: John R. Stoup (Fed)

Displaying 76 - 78 of 78

Uncertainty and Dimensional Calibrations

November 1, 1997

Author(s)

Theodore D. Doiron, John R. Stoup

The calculation of uncertainty for a measurement is an effort to set reasonable bounds for the measurement result according to standardized rules. Since every measurement produces only an estimate of the answer, the primary requisite of an uncertainty

A High Accuracy Micrometer for Diameter Measurements of Cylindrical Standards

January 1, 1994

Author(s)

John R. Stoup, Theodore D. Doiron

NIST has developed a new instrument to measure cylindrical standards including thread wires and plain plug gages. The instrument uses a laser interferometer system which is coupled with an air bearing linear motion slide and precise contact geometry to