Standard Test Method for
Intensity of Scratches on Aerospace Glass Enclosures1
This standard is issued beneath the constant designation f 428; the quantity at once following the designation suggests the year of
original adoption or, inside the case of revision, the 12 months of final revision. more than a few in parentheses shows the year of ultimate reapproval. a
superscript epsilon (e) suggests an article change for the reason that final revision or reapproval
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