Perpendicularity
The line or surface must be contained within the tolerance zone formed between two planes a distance t apart and perpendicular to the datum
Notation example
A
Notation example
ø0.08 A
PG
ø0.08 A
61
A
Tolerance zone
Tolerance zone
øt
Datum A
Datum axis
t
Verification example using a roundness
measuring instrument
Verification example using a roundness
measuring instrument
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 perpendicular to the datum
Specified direction: Radial direction Direction
that intersects the datum axial straight line
and is vertical to the datum axis line
0.1 A
Specified direction: Radial direction Direction
that intersects the datum axial straight line
and is vertical to the datum axis line
0.1 A
A
A
Tolerance zone
Tolerance zone
øt
Verification example using a roundness
measuring instrument
Datum axis
Datum axis
Verification example using a roundness
measuring instrument
t
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 datum
Specified direction: Radial direction Direction
that intersects the datum axial straight line
and is vertical to the datum axis line
Specified direction: Radial direction Direction
that intersects the datum axial straight line
and is vertical to the datum axis line
0.1 A
0.1 A
A
A
Tolerance zone
Tolerance zone
t
Datum axis
Verification example using a roundness
measuring instrument
Datum axis
t
Verification example using a roundness
measuring instrument
Quick Guide to Measurement