Sources for Retroreflectance Meter Follow

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: 

RoadVista

San Diego, CA 92123 USA

www.roadvista.com

+858-279-6044

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 http://www.roadvista.com/guideSummary.shtml which is useful in understanding retro-reflectance of highway signage.

Zehntner Testing Instruments GmbH

Switzerland

+41 (61) 953 05 50

www.zehntner.com

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

+603-526-2420

www.aviantechnologies.com

Delta Instruments

DK-2970 Hørsholm

Denmark

+45 (72) 19 40 00

 www.delta.dk

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:

Ennis-Flint

Thomasville, NC 27630 USA

www.ennisflint.com

+336-475-6600