Note – Based on that entry, all future objects will default to that scale.
Steps for Existing PDF or Image
- Tap on the Calibrate icon in the lower-left corner of the screen
- Accept pop up message
- Drag measure bar to match known distance
- Tap to accept
Starting With a Blank Canvas
Drag across the entire width to define. Note it does not have to be exact, as you are setting an approximate size to match the needs of your upcoming project.