The GD&T Feature Inspection Auto Filter works great for most appli- cations except for True Position Checks using alternate cylinder eval- uation modes. Additional Hole Measurement Modes may include:
Measure a single point in the hole (axis)
Measure 2 points on the axis
Place a dowel pin in the hole and measure it, indirectly measur- ing the hole (either as a circle or a scan)
Measure the hole scanning with a pin nest
This check box was added specifically to fill this need. This check box option converts the operation from a surface filter to a comparison to cylinders defined by those surfaces.
Points are therefore compared to both the axis of the cylinder de- fining the pin or hole and the surface of that cylinder such that it is no longer bounded by the ends of the hole but can extend upward along its axis.