Interferometer tests automobiles gages,IJ Fullmer,Bureau of Standards,1937

Title: Interferometer tests standard gages for automobile manufacturers. Washington, D.C. May 28. I.J. Fullmer of the Bureau of Standards is shown with an interferometer by means of which differences in length are measured in terms of wave-lengths of light to the millionth of an inch. A four-inch square precision gage is being compared for length with the Bureau's standard 4 inch, which is rectangular in shape. These gages are tested against the master gages which the different auto manufacturers check their measuring devices so that the parts of the cars separately made can be, when assembled, fitted perfectly. The standard gage and the master gage are shwon being compared in the interferometer, 5/28/37
Creator(s): Harris & Ewing, photographer
Date Created/Published: [19]37 May 28.
Notes:
Title from unverified caption data received with the Harris & Ewing Collection.
Gift; Harris & Ewing, Inc. 1955.
General information about the Harris & Ewing Collection is available at http://hdl.loc.gov/loc.pnp/pp.hec
Temp. note: Batch four.
Subjects:
United States--District of Columbia--Washington (D.C.)
Bookmark /hec2009009481/
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