Quick Guide to Precision Measuring Instruments

63/76

PG61Quick Guide to Measurementø0.08AAø0.08AA PerpendicularityThe line or surface must be contained within the tolerance zone formed between two planes a distance t apart and perpendicular to the datumNotation exampleNotation exampleVerication example using a roundness measuring instrumentVerication example using a roundness measuring instrumentøtDatum AtDatum axisTolerance zoneTolerance zoneA0.1AA0.1A0.1AA0.1AAtt Circular Runout (Radial and Axial)The line must be contained within the tolerance zone formed between two coplanar and/or concentric circles a distance t apart concentric with or per-pendicular to the datumSpecied direction: Radial direction Direction that intersects the datum axial straight line and is vertical to the datum axis lineSpecied direction: Radial direction Direction that intersects the datum axial straight line and is vertical to the datum axis lineSpecied direction: Radial direction Direction that intersects the datum axial straight line and is vertical to the datum axis lineSpecied direction: Radial direction Direction that intersects the datum axial straight line and is vertical to the datum axis lineVerication example using a roundness measuring instrumentVerication example using a roundness measuring instrumentVerication example using a roundness measuring instrumentVerication example using a roundness measuring instrumentøtDatum axisTolerance zoneTolerance zoneDatum axis Total Runout (Radial and Axial)The surface must be contained within the tolerance zone formed between two coaxial cylinders with adifference in radii of t, or planes a distance t apart, concentric with or perpendicular to the datumtTolerance zoneTolerance zoneDatum axisDatum axis