#### Hit Controls Area

The Hit Controls area contains a list that controls where hits are taken. Other boxes in this area get hidden or displayed depending on the type of hit selected from the hit type list. This area contains these items:

Item | Description
Hit Type list | The Hit Type list contains these hit types:

- VECTOR - The scan uses vector hits.

- SURFACE - The scan is taken along a surface and uses surface hit data.

- EDGE - The scan is taken along an edge. When Edge hits are used and CAD data is available, PC-DMIS will allow you to enter a flush thickness for the nominals. This thickness is applied normal to the edge approach vector when finding the nominals for the scan. (This is contrary to the regular thickness that is applied along the surface normal.)

- ANGLE - This scan uses ANGLE hit data.

The scan will always do a stitch scan regardless of the probe head type.

Initial box | The Initial box allows you to set how many sample hits are taken before each actual point is measured. These sample hits are taken only the first time a scan is run.
Perm box | The Perm box allows you to set how many sample hits are permanently taken before each actual point is measured. These sample hits are taken each time the scan is run.
Spacer box | The Spacer box allows you to set the distance between sample hits.
Depth box | The Depth box allows you to set the depth from the edge where the sample hits will be taken. This option is only available if EDGE is selected from the Hit Type list.
Indent box | The Indent box allows you to set the indent on the top surface from the edge where the sample hits will be taken. This option is only available if EDGE is selected from the Hit Type list.
Indent 1 box | The Indent 1 box allows you to set the indent on the top surface from the edge where the sample hits will be taken. This option is only available if ANGLE is selected from the Hit Type list.
Indent 2 box | The Indent 2 box allows you to set the indent on the top surface from the edge where the sample hits will be taken. This option is only available if ANGLE is selected from the Hit Type list.
Flush box | The Flush box allows you to enter a flush thickness for the nominals if an Edge or Angle hit type is used and CAD data is available. This thickness is applied normal to the edge approach vector when finding the nominals for the scan. (This differs from the regular thickness which is applied along the surface normal.)