The PCE-PGM 100 Surface Testing works with measuring geometries of 20°, 60° and 85°, using the reflection principle. This means that the Surface Testing emits light which hits the surface to be tested. A part of the light will be absorbed by the surface and another part will be reflected.
The PCE-SGM 60 gloss meter with small measuring area is used on many types of surfaces to quantify their gloss units. This gloss-measuring device operates on the reflection principle by sending light from a calibrated light source onto the surface to be tested and then calculates the gloss level of the surface according to the reflection of light particles. These gloss test instruments allow you to measure very high gloss surfaces above 70 gloss units (GU).