GE Everest XLG3 VideoProbe, Operating Manual

Page: 102 / 166

94 Chapter 7 Measuring Features and Defects GE Inspection Technologies XLG3 VideoProbe System
Types of 3D Phase Measurements
This table specifically addresses cursor placement for each type of 3D Phase measurement. For the
complete procedure, see
“To Take a 3D Phase Measurement” on page 91.
Type Example Description Cursor Placement
Length A linear (point-to-point)
measurement. Place both cursors at the
desired locations.
Point to Line The perpendicular distance
from a point to a line. Place the first two cursors to
define a reference line. Place
the third cursor at the
perpendicular distance you
want to measure.
Depth 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.
Place the first three cursors to
define a reference plane. Place
the fourth cursor at the
perpendicular distance you
want to measure.