Fine irregularities in the surface texture of a material, usually including those resulting from the inherent action of the production process. Surface roughness is usually reported as the arithmetic roughness Ra and is given in micrometers or microinches.
The Fabricator Blog
The Arsenal of Democracy—When Detroit bailed out the U.S. government - by Josh Welton Remember when the U.S. government bailed out Detroit? Many people were up in arms over the action. Perhaps knowing more about the automakers’ contributions to winning WWII might have softened some opinions. Here’s a short story about Chrysler's role.
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