The GM 50 gloss surface tester is a highly accurate and durable digital gloss meter. This gloss test is easy to use, compact and solidly built. Colour and gloss are very important factors in determining surface characteristics. This gloss meter can take measurements on the spot, in the field, on the production floor, in laboratories, and in receiving departments. This unit has a measuring geometry of 60° and can be used on flat surfaces.
Principle
Gloss is determined by measuring the reflection of light on a particular surface. This measurement takes into consideration the intensity of light reflected from a specific point onto a specific surface. According to this, the surface gloss reading of glass with the previously calculated coefficient of 1567 must indicate the value relative to 100. A plate of black glass is used as the reference surface for calibration with a value of 90.