❤❤Shipping Policy : Battery Not included during the shipping❤❤ Applications: ❤❤Stone materials , such as marble , granite , etc . Features： ❤❤Small, Smart, Stable. ❤❤Simple to use. ❤❤The knob protector for operating with easy. Specifications: ❤❤Reading Range: 0～199 GU ❤❤Deviation: ±2 GU ❤❤Resolution: 1GU ❤❤Measuring Area: 10x20 mm2 ❤❤Incidence Angle: 60 Deg. ❤❤Dimension(L×W×H):5.12×1.57×3.15 in(123×38×65) ❤❤Weight: 0.66 lb ❤❤Power Supply(V):One AA-size battery(Battery Not Included) Operational Notes: ❤❤The glossmeter should be kept clean during operation. Otherwise may cause measurement errors and inaccurate verification. ❤❤If the surface of the work board is foggy, dusty or smudged, wipe it off with lens paper or a soft cloth to make the measuring more accuracy. ❤❤The measuring port should be attached to the measured surface to avoid external light leakage. If necessary use black light cloth or other cloth to block the light around the measuring spot. ❤❤It is recommended to avoid glare environmental measurements. ❤❤Calibration and measurement or verification operations should be performed at the same ambient temperature, otherwise too large ambient temperature differences will result in digital offsets. ❤❤If the MG6 series gloss meter is not used for a long time, it should be withdrawn from the battery to avoid corrosion and damage to the instrument.