American national standard : cylindrical gears : ISO system of flank tolerance classification. Part 2, Definitions and allowable values of double flank radial composite deviations / International Organization for Standardization.
Cover title. "Approved October 2021"--Page ii "ANSI/AGMA ISO 1328-2-A21. Identical to ISO 1328-2:2020"--Cover Includes bibliographical references (page 21).
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