Specification: Model: ETB-0686 Projecting angle:60ºMeasure range:0~200GuAccuracy:<±1.2GuRepeatability: ± 0.5 Gueba Stability: <±0.4 Gu/30MinMeasuring port size:16×32mmSpot size:13 × 25mmPower Supply:2*1.5V AA Battery(Not Included Delivery)Size:114×38×70mmEnvironment Temperature:0℃~40℃Relative humidity:≤ 85%RHApplications:The surface luster measure for printing ink, oil paint, bake lacquer, coat, woodwork and others. The surface luster measure for construction decoration materials: Marble;granite; glass chemical polishing brick, pottery brick.The surface luster measure for plastic, sheet.The surface luster measure for other non-metal materials.For reference only:20˚: High gloss paint (cars), plastics, varnish, sheet, paper and metal.60˚: Universal for paints, printing ink,varnish, metal, anodized aluminum, plastics and ceramics.85˚: Matt paint and surfaces in aviation, military, furniture and automobile interiors.