DeFelsko PosiTector PRBGLS206085 PosiTector Gloss Meter - Probe Only - Range: Low / Matte, 60° Value:< 10 GU, Measure With: 85°. Compatible with the PosiTector GLS gloss meters, this gloss meter probe is suitable for high-gloss, semi-gloss, and matte-gloss applications and calculates the haze index. In addition, this probe measures at a 20°, 60°, and 85° angle.