Sources for Retroreflectance Meter


Source for Retroreflectance Meter

HunterLab has never built instrumentation for retro-reflectance, a specialized field typically applied to highway signage and safety clothing, but here are three manufacturers that do: 


San Diego, CA 92123 USA


RoadVista makes retroreflectance instruments for highway markings and signage that conform to EN 1436 and ASTM E1710  

RoadVista has a publication "Guide to Retroreflective Measurement Principles for Highway Signs and Markings" at which is useful in understanding retro-reflectance of highway signage.

Zehntner Testing Instruments GmbH


+41 (61) 953 05 50

Zehntner Instruments make a variety of gloss meters, reflectometers and retro-reflectometers specifically for highway road markings, including EN 1436.

US Distributor for Zehntner Testing Instruments:

Avian Technologies LLC

Sunapee, NH 03782 USA



Delta Instruments

DK-2970 Hørsholm


+45 (72) 19 40 00

Delta has a variety of retro-reflectometers, both road material measurement units and a gun for highway signs all of which conform to various DIN, ASTM and CEN specifications. Also has a 0/d sphere instrument for daylight visibility (luminous coefficient) of road markings that conforms to EN 1436 Road marking materials - Road marking performance for road users.

US Distributor for Delta:


Thomasville, NC 27630 USA


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