TBTTQ-1J Retroreflectometer for road studs is portable device which used to measure the coefficient of luminous intensity RI of RRPM (Raised Pavement Markers or road studs).
Features:
1. Equip with imported sensor;
2. Touch screen real-time display temperature and humidity;
3. USB port for test data exporting to computer;
4. Observation angle automatically matches the illumination angle;
5. English software or customized language are available.