In this lesson, we will consider switching the unit of measurement from millimeters to inches and back.
Step 1: Click on the menu icon in the upper left corner .
Step 2: In the menu, click on "Settings" .
Step 3: Then select the item "Select Measures of Length" .
Step 4: In the "Select Measures of Length" window select "Inches" .
The unit of measurement is then switched by inches .
Click on the arrow  to exit the menu.
Further in the application, all sizes are converted to inches.
Similarly, you can switch inches by millimeters and all sizes will be displayed in millimeters.