RetroSign GR1

The professional choice for measuring all types of retroreflective sheetings for road signs and license plates.

GR1 is the single channel version of the RetroSign instrumentation for measurements of retroreflectivity of road signs. It measures the main observation angle stated in the ASTM (E-1709, E-2540 & E1809) or CEN (EN 12899) standards. Due to differences in measurement standards, GR1 comes in two versions, one for the ASTM markets (entrance angle: -4° and observation angle: 0.2°) and another for the CEN markets (entrance angle: +5° and observation angle: 0.33°).

GR1 is based upon an accurate point measurement geometry offering superior performance in measuring retroreflective sheeting material due to its accurate, sensitive and durable filters. In measuring microprismatic sheeting materials, its point geometry replicates real-world driving conditions and outperforms e.g. alternative solutions using annular measuring geometries.

The instrument operates with a reproducibility of +/-5% and a repeatability of +/-2%. The internal memory stores more than 250,000 readings.



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