granite plate Inspection surface plate

granite Inspection surface plateSANXING black granite surface plate precision please refer advanced leading countries standard flatness tolerance ACCORDING TO (JB/T7975-1999)STANDARD GRADE000=1×(1+d/1000)μm GRADE00=2×(1+/1000)μm GRADE0=4×(1+d/1000)μm GRADE1=8×(1+d/1000)μm (d is diagonal mm) (measuring temperature 20±2°C) Inspection surface plate PrecisionOrder NoDimension(mm)Weight(kg)Length of Diagonal(mm)grade000(μm)grade00(μm)grade0(μm)grade1(μm)100-1001300×200×5093601.535.511100-1002300×300×70194241.535.511100-1003400×250×70214721.53612100-1004400×400×1004856823.56.513100-1005630×400×1007674623.5714100-1006630×630×13015589124816100-1007800×500×13015694324816100-10081000×630×15028411822.54.5918100-10091000×750×15033812502.54.5918100-10101000×1000×15045014142.551020100-10111200×800×15043214422.551020100-10121600×1000×2009601887361224100-10132000×1000×250150021363.56.51326100-10142000×1600×300288025613.571428100-10152500×1600×30036002968481632100-10163000×2000×400900036054.591836100-10174000×2500×500153504717611.52346