2011

Table Of Contents
DIMZIN
Controls the suppression of zeros in the primary unit value.
Display Lateral Tolerances
Lateral tolerances are values indicating the amount a measured distance can
vary. You can control whether lateral tolerances are displayed and you can
choose from several styles of lateral tolerances.
A lateral tolerance specifies the amount by which a dimension can vary. By
specifying tolerances in manufacturing, you can control the degree of accuracy
needed for a feature. A feature is some aspect of a part, such as a point, line,
axis, or surface.
You can apply tolerances directly to a dimension by appending the tolerances
to the dimension text. These dimension tolerances indicate the largest and
smallest permissible size of the dimension. You can also apply geometric
tolerances, which indicate deviations of form, profile, orientation, location,
and runout.
Lateral tolerances can be specified from theoretically exact measurements.
These are called basic dimensions and have a box drawn around them.
If the dimension value can vary in both directions, the plus and minus values
you supply are appended to the dimension value as deviation tolerances. If
the deviation tolerance values are equal, they are displayed with a sign and
they are known as symmetrical. Otherwise, the plus value goes above the
minus value.
If the tolerances are applied as limits, the program uses the plus and minus
values you supply to calculate a maximum and minimum value. These values
replace the dimension value. If you specify limits, the upper limit goes above
the lower.
1456 | Chapter 31 Dimensions and Tolerances