RetroSign GR3 measures all types of retroreflective sheetings for road signs The point aperture geometry specified by the American Society for Testing and Materials (ASTM) ensures accurate readings that replicate real-world driving conditions and correspond to laboratory measurements.

It also enables the user to determine whether a microprismatic sign sheeting material has been applied correctly. Aperture reducers make it possible for RetroSign retroreflectometers also to measure small letters and symbols on road signs.

The instruments operate with a reproducibility of +/- 5% and a repeatability of +/- 2%.

Product Brochure for RetroSign GR3