ASTM-E2540 › Complete Document History
Standard Test Method for Measurement of Retroreflective Signs Using a Portable Retroreflectometer at a 0.5 Degree Observation Angle

Complete Current Edition:
   2016 R22 EDITION - REAPPROVED IN 2022 - Feb. 28, 2022

Obsolete Revision Information:
   2016(E1) EDITION - EDITORIALLY CORRECTED - April 1, 2020
   2016 EDITION - Measurement of Retroreflective Signs Using a Portable Retroreflectometer at a 0.5 Degree Observation Angle - April 15, 2017
   2008 EDITION - DEGREE OBSERVATION ANGLE, STANDARD TEST METHOD FOR - April 15, 2008