The GM2 Gloss Meter optically measures surface gloss on a variety of surfaces, including powder coating and paints (including automotive paint). This triple angle electronic meter follows international standard ISO2813 for gloss measurement of paint films. It can also be used to calculate haze in accordance with the ASTM D4039 test method. This allows a more comprehensive evaluation of the surface appearance characteristics.
Its multi-angle measuring capability means it is suitable for measuring the widest variety of surfaces and gloss levels. Its 20° angle is ideal for very high gloss surfaces such as polished metals and its 85° angle is ideal for very low gloss surfaces such as matt paints. This eliminates the need to own multiple meters of different specifications and its capability to take simultaneous readings at each angle speeds the measurement process. If a gloss reading is over 70GU at 60° then the reading at 20° is often selected. If a gloss reading is below 10GU at 60° then the reading at 85° is often selected.
As well as assessing gloss, haze can also be calculated by subtracting the gloss reading at 20° from the gloss reading at 60° to achieve a haze index in accordance with the ASTM D4039 test method.