You can configure the Measure tool to display two units of measure. For example, you can specify millimeters and inches for display in the Measure dialog box, measurement callouts, and the status bar.

To display dual measure dimensions:
-
Click Measure
(Tools toolbar) or .
- In the Measure dialog box, click Units/Precision
.
-
In the Measure Units/Precision dialog box, select Use custom settings and select the first length unit.
If you select
Use document settings, dual units are shown only if you select
Dual dimensions display in
Document Properties - Dimensions.
- Click Use Dual Units and select the second unit of measurement.
- Click
.