FIELD EVALUATION OF THE GAMMA SCIENCTIFIC MODEL 910 B RETROREFLECTOMETER

This report covers the field testing of the Gamma Scientific Model 910B Retroreflectometer. It is an evaluation of the accuracy, reliability, and over-all performance of the instrument under varying environmental conditions. This study concludes that the Model 910B Retroreflectometer is a suitable measurement device for determining the specific luminance ("brightness") of Class I reflective sheeting material, in the field. It is recommended that this field test device be used to enforce manufacturers' warranties for reflective sign sheeting, test regulatory signs for required replacement, inspect sign materials used on construction and maintenance projects, and provide a quality control tool for PennDOT Sign Shop personnel. /FHWA/

  • Supplemental Notes:
    • Sponsored by and prepared in cooperation with the Department of Transportation Federal Highway Administration.
  • Corporate Authors:

    Pennsylvania Department of Transportation

    Bureau of Materials, Testing and Research, 1118 State State
    Harrisburg, PA  United States  17112
  • Authors:
    • Malasheskie, GUJ
    • O'Block, F W
  • Publication Date: 1978-7

Media Info

  • Pagination: 36 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00185270
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-PA-77-16,, Final Report
  • Contract Numbers: 77-16
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Mar 14 2000 12:00AM