Cubes made by granite Industrial measuring tool Cubes CVA239 On inspection perpendicularity and parallelism as well as absolute 90 measuring base.Cubes Precision Order NoDimension(mm)GradeParallelism of working surfaceFlatness of working...

Square measuring tools made by JINAN BLACK granite Squares CVA235 Series For inspecting machine spindle spindle and else squareness of work-pieces.Have round hles for xize over 250×160mm to reduce weight so to take easily.Squares...

Straight Rules made by granite, not cast iron; Straight RulesCVA238 SERIES For inspecting the straightness and flatnessStraight Rules Precision Oder NoDimension(mm)Beeline tolerance of working suiface(μm)Parallelism tolerance between the upper and...

V-BLOCKS made by JINAN granite better pricision than cast iron made V-block V-BLOCKS  CAV236 Series: For inspecting the coaxality cylindricity symmetry and shifting of revolution partsV-block PrecisionOrder NoDimension(mm)Flatness of working...