Public domain
Production. Aircraft. A test engineer in a big Western aircraft plant examines a metal sample through a high-power (2700 diameter) microscope. Representative samples of all structural metals purchased for use in building ships in this plant must pass critical tests to detect faulty materials
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineProduction. Aircraft. A test engineer in a big Western aircraft plant examines a metal sample through a high-power (2700 diameter) microscope. Representative samples of all structural metals purchased. 1942-01-01. United States. Office Of War Information, Bransby, David. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
Similar works
Dr. J.C. Lewis, assistant chemist, conducts microbiological titration of vitamins in dehydrated vegetables. Regional agricultural research laboratory, Albany, California
Forest Products Laboratory, Madison, Wissonsin. Dr. R.O. Marts in his laboratory. He is using an Ultropak microscope for the detection of obscure defects in airplane veneer
Untitled photo, possibly related to: Forest Products Laboratory, Madison, Wissonsin. Dr. R.O. Marts in his laboratory. He is using an Ultropak microscope for the detection of obscure defects in airplane veneer
Chemist running microscopic test on sweet potato starch at plant, Laurel, Mississippi
Professor Peterson of the Soils and Agronomy Department with apparatus for making counts of aggregates in a study of soil structure. On the ruled paper on the right appears an image of soil particles magnified 100 times. Iowa State College. Ames, Iowa
Untitled