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<p>[QUOTE=&quot;Prestoninanus, post: 872490, member: 20205&quot;]I&#039;m trying to do a bit of research on the history of grading, but I can&#039;t seem to find out the exact year that the Sheldon Scale officially became the accepted standard. All I know so far is that the Sheldon Scale has existed since 1949, but that it didn&#039;t become the &#039;industry standard&#039; until sometime in the &#039;80s. Could anyone help me pin it down to a more specific year, if one exists?[/QUOTE]</p><p><br /></p>

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