GE Everest XLG3 VideoProbe Operating Manual page 102

94 Chapter 7 Measuring Features and Defects
Types of 3D Phase Measurements
This table specifically addresses cursor placement for each type of 3D Phase measurement. For the
complete procedure, see
Type Example
Length
Point to Line
Depth
"To Take a 3D Phase Measurement"
GE Inspection Technologies XLG3 VideoProbe System
on page 91.
Description
A linear (point-to-point)
measurement.
The perpendicular distance
from a point to a line.
The perpendicular distance
between a surface and a point
above or below it. Used to
evaluate changes due to wear,
misalignment, and other
causes.
Negative measurements
indicate that the point lies
below the plane. Positive
measurements indicate that it
lies above the plane.
Cursor Placement
Place both cursors at the
desired locations.
Place the first two cursors to
define a reference line. Place
the third cursor at the
perpendicular distance you
want to measure.
Place the first three cursors to
define a reference plane. Place
the fourth cursor at the
perpendicular distance you
want to measure.