The numeric values of
dimensions can be displayed as a single measurement or in two measurement
systems. In either case, you can control details of how the numeric
values are presented.
The
settings for primary units control the display of the dimension
values, including the unit format, the numeric precision, and the
decimal separator style. For example, you can enter the diameter
symbol as a prefix, as shown in the illustration. Any prefix you
specify replaces the prefixes normally used for diameter and radius
dimensions (Diameter (unicode 2205 and R, respectively).
These
settings are available on the Primary Units tab of the Dimension
Style Manager.
Control the Display of
Alternate Units
You
can create dimensions in two systems of measurement simultaneously. A
common use of this feature is to add feet and inches dimensions
to drawings created using metric units. The alternate units appear
in square brackets ([ ]) in the dimension text. Alternate units
cannot be applied to angular dimensions.
If
alternate-units dimensioning is on when you edit a linear dimension,
the measurement is multiplied by an alternate scale value that you
specify. This value represents the number of alternate units per
current unit of measurement. The default value for imperial units
is 25.4, which is the number of millimeters per inch. The default
value for metric units is about 0.0394, which is the number of inches
per millimeter. The number of decimal places is specified by the
precision value for alternate units.
For example, for imperial units, if the alternate
scale setting is the default value, 25.4, and the alternate precision
is 0.00, the dimension might look like the following figure.
To add and format primary
units
-
- In the Dimension Style Manager, select
the style you want to change. Click Modify.
- In the Modify Dimension Style dialog
box, Primary Units tab, under Linear or Angular Dimensions, select
a unit format and precision value for the primary units.
- Under Linear Dimensions, enter any prefix
and suffix for the displayed dimension.
- Click OK.
- Click Close to exit the Dimension Style
Manager.
To add and format alternate
units
-
- In the Dimension Style Manager, select
the style you want to change. Click Modify.
- In the Modify Dimension Style dialog
box, Alternate Units tab, select Display Alternate Units.
- Under Alternate Units
- Select a unit format from the list.
- Select a precision value for the alternate
units.
- Enter any prefix and suffix for the displayed
dimension, including a space character if you want a gap between
the dimension and the prefix or suffix.
- Click OK.
- Click Close to exit the Dimension Style
Manager.
CommandsDIMSTYLE
Creates and modifies
dimension styles.
System VariablesDIMALT
Controls the display
of alternate units in dimensions.
DIMALTD
Controls the number
of decimal places in alternate units.
DIMALTF
Controls the multiplier
for alternate units.
DIMALTTD
Sets the number of decimal
places for the tolerance values in the alternate units of a dimension.
DIMALTU
Sets the units format
for alternate units of all dimension substyles except Angular.
DIMALTZ
Controls the suppression
of zeros for alternate unit dimension values.
DIMAPOST
Specifies a text prefix
or suffix (or both) to the alternate dimension measurement for all
types of dimensions except angular.
DIMAUNIT
Sets the units format
for angular dimensions.
DIMDEC
Sets the number of decimal
places displayed for the primary units of a dimension.
DIMDSEP
Specifies a single-character
decimal separator to use when creating dimensions whose unit format
is decimal.
DIMLFAC
Sets a scale factor
for linear dimension measurements.
DIMLUNIT
Sets units for all dimension
types except Angular.
DIMPOST
Specifies a text prefix
or suffix (or both) to the dimension measurement.
DIMTDEC
Sets the number of decimal
places to display in tolerance values for the primary units in a
dimension.
