File:Christopher Blackburn (7454793044).jpg

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NIST technician Christopher Blackburn uses a microscope to precisely align a retroreflector over the center of a hash mark on a measuring tape.

See also www.nist.gov/pml/div683/olympics-062712.cfm

Credit: Bruce Borchardt

Disclaimer: Any mention of commercial products within NIST web pages is for information only; it does not imply recommendation or endorsement by NIST.

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Date
Source Christopher Blackburn
Author National Institute of Standards and Technology

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Public domain
This image is in the public domain in the United States because it is a work of the United States Federal Government, specifically an employee of the National Institute of Standards and Technology, under the terms of Title 17, Chapter 1, Section 105 of the US Code.

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This image was originally posted to Flickr by National Institute of Standards and Technology at https://flickr.com/photos/63059536@N06/7454793044. It was reviewed on 7 September 2016 by FlickreviewR and was confirmed to be licensed under the terms of the United States Government Work.

7 September 2016

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current01:46, 7 September 2016Thumbnail for version as of 01:46, 7 September 20162,592 × 1,944 (1.94 MB)Vanished Account Byeznhpyxeuztibuo (talk | contribs)Transferred from Flickr via Flickr2Commons

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