Principal Directions
Principal directions are directions in the pitch plane, and correspond to the principal cross sections of a tooth.
The axial direction is a direction parallel to an axis.
The transverse direction is a direction within a transverse plane.
The normal direction is a direction within a normal plane.
Read more about this topic: List Of Gear Nomenclature
Famous quotes containing the words principal and/or directions:
“Light, God’s eldest daughter, is a principal beauty in a building.”
—Thomas Fuller (1608–1661)
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—Anna Quindlen (b. 1952)