@jclaidler wrote:
....There is no direct 'convert' option within AutoCAD, as it is basically a 'unitless' application.
Run a few experiments.
Create cubes of known size.
Run the -dwgunits command and set the units.
Save the file in DWG and in neutral format like STEP and then open in other CAD software (like Inventor, Fusion 360, SolidWorks...)
Are the units set with -dwgunits recognized by these other programs?
Is AutoCAD "unitless"?
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