Skip to main content
U.S. flag

An official website of the United States government

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.

Uncertainty of Calibration of Instruments, a Simple Example in Dimensional Metrology



Theodore D. Doiron


How is the calibration of a micrometer using gage blocks different from using a micrometer to calibrate gage blocks? In the measurement community there seems to be a lot of confusion about which characteristics of an instrument go into the uncertainty budget for calibrating that instrument. This talk will discuss this issue for a standard hand micrometer, and show that given a set of gage blocks and micrometer readings, the uncertainty is exceedingly different depending on which is the standard and which is the instrument under test.
Proceedings Title
NCSL International Conference
Conference Dates
July 14-18, 2013
Conference Location
Nashville, TN


dimensional metrology, uncertainty, instrument under test, micrometer


Doiron, T. (2013), Uncertainty of Calibration of Instruments, a Simple Example in Dimensional Metrology, NCSL International Conference, Nashville, TN (Accessed June 17, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created May 13, 2013, Updated December 5, 2017