The DeFelsko PosiTector GLS measures GU (gloss units) and percent reflectance. Innovative technology and factory calibration in the PosiTector GLS mean that it arrives ready-to-measure - usually, there is no need to perform a calibration adjustment. If the probe is resting in the included protective base plate and the Power-On Cal feature is enabled, the probe will automatically perform a check and calibration using the certified gloss standard (tile) incorporated in the base plate.
Conforms to ASTM C584/D523/D4039, ISO 2813/7668, JIS Z 8741, AS/NZS 1580.602.2