Tool(s): Pair of custom reference planes consisting of parallel horizontal planes + Pair of custom reference planes consisting of parallel inclined planes + Pair of custom reference planes consisting of two inclined planes Tool(s): Pair of custom reference planes consisting of parallel horizontal planes + Pair of custom reference planes consisting of parallel inclined planes + Pair of custom reference planes consisting of two inclined planes
Upper plane
Absolute elevation, plane parallel to datum level
The upper, custom reference plane is parallel to the datum level (i.e., horizontal). The height of the upper custom reference plane is entered as an absolute value.
Set component height, plane parallel to the other plane
The upper custom reference plane is parallel to the lower one. Enter the offset to the lower reference plane.
If the custom pair of reference planes is inclined, click 
if you want the system to interpret the value as a perpendicular offset. Otherwise, click 
(the value is interpreted as a vertical offset).
Upper plane free
The upper plane is created. To do this, either enter three points in the definition points area and specify their height, or enter two points and the angle of inclination.
It is best to use points whose height you know as the definition points. The definition points and the boundary points (construction points) of the plane do not have to be the same.
Elevation spec
This is where you enter the height of the upper reference plane.
Lower plane
Absolute elevation, plane parallel to datum level
The lower, custom reference plane is parallel to the datum level (i.e., horizontal). The height of the lower custom reference plane is entered as an absolute value.
Set component height, plane parallel to the other plane
The lower custom reference plane is parallel to the upper one. Enter the offset to the upper reference plane.
If the custom pair of reference planes is inclined, click if you want the system to interpret the value as a perpendicular offset. Otherwise, click (the value is interpreted as a vertical offset).
Lower plane free
The lower plane is created. To do this, either enter three points in the definition points area and specify their height, or enter two points and the angle of inclination.
It is best to use points whose height you know as the definition points. The definition points and the boundary points (construction points) of the plane do not have to be the same.
Elevation point
This is where you enter the height of the lower reference plane.
Definition points
You can only enter definition points when Upper plane free is active in the Upper plane area and/or Lower plane free is active in the Lower plane area.
X coordinate
This is where you enter the X coordinates of the definition points for the custom pair of reference planes.
Y coordinate
This is where you enter the Y coordinates of the definition points for the custom pair of reference planes.
Height at top
This is where you enter the height of the three definition points for the upper reference plane.
Height at bottom
This is where you enter the height of the three definition points for the lower reference plane.
Points
Clicking on 
Copy Settings closes the dialog box and you can enter the definition points as follows:
Examples of custom pairs of reference planes
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