Sets up units of measure and precision readout for the part. You can specify units of measure and precision readout for properties such as density, volume, mass, coefficient of thermal expansion, and so forth.
Name
Lists the name of the various units of measure available, and an entry for Scalar, which is used for unitless values.
Scalar values are used when a variable in the variable table has no units of measure associated with the value. For example, a variable that references the number of elements in a circular pattern of features has no units. Other scalar values commonly found in the variable table would be physical property accuracy and the neutral factor used to calculate bend allowance on sheet metal parts. Scalar values are also used on families of parts where the number of elements in a pattern of features must change for each family member.
Value
Defines the units of measure you want to use, and the Precision column defines the number of significant figures to display.
Precision
Determines the decimal place to which values are rounded. The precision setting does not alter the numbers that you type into the boxes, only the display of the numbers in the box. Values ending in 5 are rounded up. For example, if the Precision readout is .123 and you draw a line that is 1.1056 inches long, then the line value length is rounded. The length appears as 1.106 inches long. If you are using mm as your drawing sheet units, you can have the values display in the boxes as 3.5 mm or 3.50 mm.
Note:
When you set options on this dialog box for the units in a document, the settings do not affect the dimensional values for the document. You can set options for the dimensional value with the Properties command on the Edit menu.
You set the actual values for the mechanical properties on the Advanced Units dialog box by assigning a part material using the Material Table command. For example, to set the density value for an aluminum part, you can select from one of the available aluminum materials in the Material Table, or define a new aluminum material that matches the working characteristics of the aluminum you need. For more information, see the Material Table command Help topic.