Rhino 9 feature request-changeunits-keep annotation relative to drawing

Rhino
1

When I change the unit from metric to imperial and (vice versa ) - the model size doesn’t change, but the dimension is in relation to the drawing. Am I might missing something here?

Note - I always use the second option when changing dimensions (change unit system, maintain object’s size - as I always work to a scale)

I usually use a dimension style for dimensioning (or variation of one style - as I need the different length of extension lines (sometimes I use a fixed gap , sometimes use a fixed length whiting the same drawing). Yea I can set up a Dimension Style for imperial and a separate one for metric, but as I use various style withing one drawing, then I end up changing 3 dimension style to 3 other dimension style manually…

Would it be possible to have the dimension style relative to the drawing / model - e.g.: when I change the unit from metric to imperial (or the other way) - my dimensioning will not go out of the window, but it stays as it was? It would be awesome to have the option perhaps to change the dimensions to metric to imperial too, but this is not as important as I usually use a secondary dimension anyway…

2

Can you show us what you are up against. There are ways to show units in alternate scales. And there are ways to show two different units on the same dimension. But and image would help understand the final result you are looking for.

Alternate units allow dimensions to display a second unit of measurement alongside the primary one (e.g., millimeters and inches at the same time). This is configured per Dimension Style.

How to set it up:

  1. Go to File > Properties (or Tools > Options) > Annotation Styles (Rhino 7+) or Dimension Styles (Rhino 6).
  2. Select or create a dimension style.
  3. Look for the Alternate Units section within the style settings.
  4. Enable alternate units and choose:
  • The alternate unit type (e.g., inches, mm, feet)
  • Prefix/suffix text
  • Whether to show alternate units below or after the primary value
  • Length factor/scale if needed