Standard Guide for Calibrating Reticles and Light Microscope Magniﬁcations1
This standard is issued under the ﬁxed designation E 1951; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
Click below to download ASTM E 1951 – 02 pdf free