1. The instrument employs opto-mechanical-electronic integration and microcomputer measurement and control technology, featuring test data statistical processing capabilities, printable output, and the ability to measure the gloss of various object surfaces. 2. The instrument offers multiple incident and reflection measurement angles (75°, 20°, 60°/45°). 3. Polished black glass with a refractive index of 1.567 is used as the gloss standard. The gloss level is defined as 100 (gloss unit) for black glass materials with an ideally smooth surface. 4. Employing range extension technology, the instrument can measure the gloss of any surface (from zero gloss to an mirror finish). 5. The instrument has a power-off memory function and can automatically print test reports. The computer remembers zeroing and calibration , sample numbers, statistical calculations, and displays digitally, and can print reports showing measured values, average values, and statistical results., Manufacturer: GQNBLVHZUPDM