HEIDENHAIN ND 1300 OED and Crosshair Systems - Manual (Page 85)

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6
Measuring
Probing rectangles
Five probed points are required to measure a rectangle. The five points must be probed in a prescribed
pattern, and must be probed in a clockwise or counterclockwise sequence.
As shown above, the correct pattern of points probed around the rectangle is:
• Two points well distributed along one long side, followed by
• One point on the closest end, followed by
• One point on the approximate center of the second long side, followed by
• The last point on the remaining end
CAUTION
Probing a different pattern of points, or probing out of either clockwise or counter-
clockwise order will result in erroneous rectangle measurements.
When the rectangle is probed as described above using Measure Magic, Measure Magic will assign the slot
feature. However, the slot feature can easily be changed to a rectangle by selecting the rectangle feature
from a menu of alternatives in the DRO window.
Measurement results are shown in the Feature list, View window and DRO window. The feature graphic in
the View window shows the feature and the points used to define it. The DRO window shows the number
of points probed, the coordinate location of the center of the rectangle, the rectangle length, the rectangle
width and the angle of the rectangle center line with respect to the skew axis.
Touch the feature type... to select the correct rectangle
feature type
Probed points are shown in the
View window
Probing and Measuring Features