0.0001 mm
0.00001 mm
0.000001 mm
0.0000001 mm
Secondary texture
Roughness
Waviness
Waviness spacing
The irregularities in the surface texture result from the inherent action of the production process. These will include traverse feed marks and irregularities within them.
Mild steel
High carbon steel
High speed steel
Diamond
One-tenth of an inch
One-hundredth of an inch
One thousandth of an inch
One millionth of an inch
Lay is the direction of the predominant surface pattern, ordinarily determined by the production method used.
Normal profile is the contour of a surface in a plane perpendicular to the surface, unless some other angle is specified
One micrometer is equal to one thousandth of a millimeter.
Flaws are irregularities, which occur at one place or at relatively frequent or widely varying intervals in a surface