ASTM-E1951 › Complete Document History
Standard Guide for Calibrating Reticles and Light Microscope Magnifications

Complete Current Edition:
   2014 R19 EDITION - REAPPROVED IN 2019 - Nov. 19, 2019

Obsolete Revision Information:
   2002 R07 EDITION - REAPPROVED IN 2007 - Oct. 1, 2007
   2002 EDITION - Calibrating Reticles and Light Microscope Magnifications - April 10, 2002
   2001 EDITION - Calibrating Reticles and Light Microscope Magnifications - Dec. 10, 2001
   1998 EDITION - Calibrating Reticles and Light Microscope Magnifications - May 10, 1998