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Description:200mm Stainless Steel Edge Ruler Machinist Precision Layout Edge Ruler Gauge Level 00 For Flat MeasuringSpecifications:Product NameStainless Steel Edge RulerLevel00MaterialStainless SteelLength200mmWidth6mmHeight29mmUse ForEdge measuring, designed for precision layout and measurement work.Quantity1 Pc ×Edge RulerFeatures:-- For checking the edge, using the light-gap method. The blade is bevelled on both sides.-- Supplied in a protective case.-- Edge, beams and blades are ground and lapped.Instructions:1) Hold the knife edge perpendicular to the surface of the workpiece and check it in the longitudinal, lateral and diagonal directions2) During the inspection, if the knife edge and the plane of the workpiece are weak and uniform, the flatness of the workpiece is acceptable; if the intensity of the incoming light is different, the plane of the workpiece is uneven. It can be inserted with the feeler at the edge of the knife and the workpiece. The error of the flatness can be determined according to the thickness of the feeler.Package Included:1 Pc ×Edge RulerMore Details: