User's Manual
MH3D
©2004 TESA Switzerland All Rights Reserved.
Page 5-9
Glossary
Firmware Specific program functions stored on PROMs rather than
in software.
First-Named Axis The first letter in the name of the working plane. For
example, in the XY working plane the first-named axis
is X.
Flatness A measurement routine that computes the deviation from
true flatness of a plane.
Form The amount a feature deviates from perfect. If form
equals zero, the feature is perfect.
Form Tolerance A type of geometric tolerance that controls the shape of
a feature. Form tolerances include flatness, roundness,
straightness, etc.
Free Floating A mode of CMM operation where the probe is moved
Manual Mode manually from point to point without use of a motor
drive. Used only on machines with nearly frictionless
bearings.
Gage A mechanical artifact used either for checking a part or
for checking the accuracy of a machine. A measuring
device with a proportional range and some form of
indicator, either analog or digital.
Geometric The use of geometric shapes to define part features.
Dimensioning
Geometric Elements Seven shapes used to define a part and its features. The
shapes are point, line, plane, circle, cylinder, cone, and
sphere.
Granite A dense, wear resistant, mineral used in the construction
of CMM work tables. It is capable of being finished to
excellent flatness.
Hard Disk A rigid disk used for storing programs and data collected
by the computer. It is usually permanently installed
inside the computer.
Hard Probes Solid probes. Mechanical probes terminating in balls,
cylinders or taper shapes, or as rotating edgefinders. Can
only be used with manual machines.
Hardware The physical components of a computer system, includ-
ing the CPU, keyboard, disk drive, monitor and printer.
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