The following devices are in accordance with ASTM E2177:
Standard ASTM E2177
ZDR 6020 Dynamic Retroreflectometer RL
Mobile retroreflectometer for continuous measurement of the night visibility RL for all types of road markings at normal traffic speed.
ZRM 6013+ Retroreflectometer RL/Qd
Retroreflectometer with memory for determining the retroreflection of road markings.
ZRM 6014 Retroreflectometer RL/Qd
Portable handheld top class retroreflectometer with innovative options for measuring night and day vision of road markings.
ZRM 6006 Retroreflectometer RL/Qd
Budget priced user-friendly entry level retroreflectometer with one button operation for measuring night and day visibility.
ZRM 6010 Retroreflectometer RL
Top class external beam retroreflectometer for measuring night visibility RL in dry condition as well as under standard conditions of continuous wetting of road and airport markings.
