Calibrate

The command Calibrate does dynamic changes of the Unit System of the drawing.

There are three modes:

1) Change Unit and apply a scale factor:

2) Select two points as reference and set the new reference distance:

3) Select a polygon and apply the new reference distance:

Note: For snap-modes to work, the drawings must be converted using the conversion parameter hlall, see documentation for AutoCAD Handle-Based Processing, so in the conversion there is an associated handle for the object to snap to.

Also see Settings on how to dynamically add a parameter.