When the DG software installs, the Units of Measure default setting is in Metric (mm or millimetres). Here are the steps to take to change the Units of Measure to Imperial (in or inches).
Please note, although the software look is different, the process is the same for DG/ML V14, DG15 and DG16
From the DG menu bar, click  Tools and then  User Settings ( V14 & DG15, Tools/Configuration/User Settings)
On the User Settings window, click  Units and then select the radio button next to  Imperial,  Inches and  Stitches per Inch
click OK to save and exit the User Settings