ASTM E2540 - 16 Standard Test Method for Measurement of Retroreflective Signs Using a Portable Retroreflectometer at a 0.5 Degree Observation Angle


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    E1709 Standard Test Method for Measurement of Retroreflective Signs Using a Portable Retroreflectometer at a 0.2 Degree Observation Angle


    Referenced ASTM Standards The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods

    E284 Terminology of Appearance

    E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

    E808 Practice for Describing Retroreflection

    E809 Practice for Measuring Photometric Characteristics of Retroreflectors

    E810 Test Method for Coefficient of Retroreflection of Retroreflective Sheeting Utilizing the Coplanar Geometry