ASTM E1809 Non Destructive Road Sign Retroreflectometer

ASTM E1809 Non Destructive Road Sign Retroreflectometer. Multi Angle Measurement: Measures 0.2 , 0.5 , and 1 observation angles simultaneously for comprehensive retroreflectivity assessment. Versatile Incident Angles: Supports -4, 15, and 30 incident angle configurations for diverse testing requirements and applications. Automatic Color Recognition: Built-in color identification for white, yellow, red, green, and blue eliminates manual selection errors. Color touch screen display and voice broadcasting function. Large Storage & Instant Printing: Stores 150,000+ records on TF card with built-in Bluetooth printer for on-site report generation. The overall size of the host is small and exquisite, making it easy to carry. Can measure the sign retroreflection coefficient under wet (rainy night) and dry conditions.