HEIDENHAIN ND 1300 OED and Crosshair Systems - Manual (Page 84)

66 QC-300 Series User’s Guide
Probing slots
Five probed points are required to measure a slot. 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 slot 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 slot measurements.
When the slot is probed as described above, Measure Magic will assign the correct feature. However,
occasionally Measure Magic will assign the wrong feature type to the data. If the wrong feature type is
assigned, it can easily be changed by selecting the correct 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 slot, the slot length, the slot width and the
angle of the slot center line with respect to the skew axis.
Touch the feature type... to display the menu of alternative
types
Probed points are shown in the
View window