User's Manual
MH3D
©2004 TESA Switzerland All Rights Reserved.
Page 5-21
Glossary
Spline The interpolation of a series of functions between two
given data points, for all the points in the set.
Squareness Deviation of the axes from 90° in their relationship to
each other.
Staging The moving of a gage from first position to second
position.
Static Motionless.
Statistical Analysis The examination of numerical information.
Step Gage A gage consisting of a rigid bar with calibrated steps
used for determining the accuracy of distance measure-
ments in a direction of linear motion.
Straightness A measurement routine that computes the deviation of a
line from true straightness. Also, the deviation of an axis
from a perfect path.
Store To save information into a computer memory.
Stylus The portion of a probe that contacts the part. Usually a
synthetic ruby ball mounted on a steel shank.
Symmetry The midpoint between two features. A symmetry feature
is the mathematical bisector of two features.
Systematic Error That portion of a machine error that results from com-
puting the mean of a very large number of similar
measurements.
Taper Probe A type of rigid probe used primarily for hole location.
Target In DCC, a specified point on the part that is being
measured.
Target Tolerance A zone around each specified target that allows for
Zone minor errors in the position of the target.
Temperature An estimate of the maximum possible measurement
Variation Error error induced solely by deviation of the environment
from average thermal conditions.
Tertiary Datum The datum established by at least one point of contact
between a datum feature and the inspection surface.
Tolerance Limiting values added to nominal dimensions that allow
variations of a measured feature.
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