User's Manual
MH3D
©2004 TESA Switzerland All Rights Reserved.
Page 5-23
Glossary
Video Terminal A CRT. Another name for the computer screen.
V Value The value of the polar angle in the polar coordinate
system.
Volumetric Accuracy Deviation among measurements of a ball bar or length
standard.
Working Plane Any of the orthogonal planes or surfaces of the part/
machine in which the operator may take measurements.
The active plane in which features are measured.
Workpiece The object to be measured.
Work Zone The measurement volume of a CMM.
Working Tolerance The maximum acceptable range in the measurements for
any performance test. This applies to repeatability,
linear displacement accuracy, volumetric performance,
bi-directional length measurement capability and point-
to-point probing performance measurement results.
X-Axis The axis of a CMM that goes from left to right as you
stand in front of the machine. Positive direction is to the
right. One of the reference lines or axes in a Cartesian
coordinate system.
Y-Axis The axis of a CMM that goes from front to rear. Positive
direction is to the rear. One of the reference lines or axes
in a Cartesian coordinate system.
Yaw Side to side deviation from a straight line, as applied to
the travel of a CMM component along an axis. The
angular motion of a carriage designed for linear motion,
about a specified axis perpendicular to the motion
direction. In the case of a carriage with horizontal
motion, the specified axis shall be vertical, unless
otherwise specified.
Z-Axis The vertical axis of a CMM. Positive direction is up.
One of the reference lines or axes in a Cartesian
coordinate system.
Zero Point The point in a coordinate system where the X, Y, and Z
axes intersect.
Z Rail The vertical moving component that holds the probe.
Also called Z Ram.
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