User's Manual
MH3D
©2004 TESA Switzerland All Rights Reserved.
Page 5-15
Glossary
Out-of-Tolerance The condition in which a feature is larger or smaller than
its specified dimension.
Output Information displayed or printed by a computer.
Parallelism The condition in which all points on a surface or axis are
equidistant from a datum plane or axis. A measurement
routine where two features are parallel within a specified
tolerance of size. One feature is the datum and the other
is the toleranced line.
Part Alignment The process of mathematically aligning the measurement
axes of the CMM with the part axes.
Part Axes The X, Y, and Z axes of a part.
Part Coordinates X, Y, and Z values that have been modified by part
alignment.
Part Orientation The alignment of an object with respect to a known
reference.
Part Program A list of coded instructions that tells the system how to
measure a part on a CMM.
Part Program A storage area that holds part programs.
Directory
Part Program Name A label assigned to a part program. It is saved, retrieved
and reused by means of this name.
Part Reference The axes alignment, datum position and working plane
Frame under which measurements are made.
Part Unnamed Axis The axis not named in the part’s working plane.
Passive Probe A solid or hard probe which mechanically fixes the
movable components relative to the workpiece.
Password A word entered at the computer keyboard to gain access
to programs or information stored in a computer.
Performance Test Any of a number of test procedures used to measure
machine performance.
Periodic Error An error in the linear displacement accuracy of a ma-
chine that is periodic over an interval which normally
coincides with a natural period of the machine scales.
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