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D1155 Standard Test Method for Roundness of Glass Spheres

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Revision Date: September 27, 2010
Updated On: September 29, 2010
Editorial Change:
 
The roundness of glass spheres is one measurable aspect relating to their performance as a retroreflective media. The function of this test method is to measure the percent of true spheres as related to compliance with applicable specifications.

Note 1—This method has been used in other industrial areas outside the intended scope of this test method.

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