Mini lathe DRO Hack in under 3 minutes

I wanted to start my knurling and thread cuts at exactly the same place. Here is a simple, fast, non-destructive and easy way to use
an inexpensive digital caliper from Harbor Freight (20$)
to make a functional (x axis) DRO (Digital Read Out)
for a Variable speed Central Machinery 7x10 mini lathe,
in under 3 minutes, without modding anything (except possibly this very long sentence).

By the way the third file is just an Allen wrench holder and shows how this design can be "derivat