Direction at point of contact: Unidirectional (wheel/dresser turning with each other), or counter-directional (wheel/dresser turning against each other).
Speed ratio: The ratio of dresser surface speed divided by wheel surface speed.
Infeed amount: The depth of cut taken per pass by the dresser on the grinding
Traverse speed: The linear speed that the dresser travels across the wheel surface.
Overlap ratio: The number of wheel revolutions for the dresser to traverse a distance equal to its contact width.