The following devices are in accordance with ASTM E1696:
Standard ASTM E1696
![ZRP 6030+ Retroreflectometer](/images/products/ZRP6030+/ZRP6030+_Retroreflectometer_R_1.jpg)
ZRP 6030+ Retroreflectometer
Portable handheld retroreflectometer for determination of the night visibility (coefficient of luminous intensity R and RI) of road studs, ambient temperature (°C/°F) as well as relative humidity (rH %).