Drawing Scale (R3DWGSCALE)¶
Command: R3DWGSCALE
Sets or displays the drawing scale for the current drawing. The scale is stored in the drawing as an XRecord and is used by text commands (T0–T4) and layout tools to calculate model-space sizes that correspond to consistent plotted dimensions.
Usage¶
Type R3DWGSCALE at the command line:
- If a scale is already set, the current value is displayed and you are prompted to enter a new one (or press Enter to keep it)
- If no scale is set, you are prompted to enter one
The scale is entered as the denominator — for example, enter 500 for a 1:500 scale.
Current scale is 500. Enter a new scale or press Enter to keep it:
Scale commands¶
The following shortcut commands adjust the current drawing scale by scaling objects in the drawing:
| Command | Description |
|---|---|
UP |
Scale up — increases drawing scale (runs ScaleUP VBA macro) |
DN |
Scale down — decreases drawing scale (runs ScaleDN VBA macro) |
SM |
Match scales — matches scale to a selected reference (runs MatchScales VBA macro) |
How scale affects text¶
The model-space text height for T0–T4 commands is calculated as:
Model height = (Scale × Plotted height mm) / 1000
For example, at 1:500 scale, T1 (2.5 mm plotted) creates text 1.25 model units tall.
See also¶
- Text Commands — T0–T4 text entry commands that use drawing scale
- R3UNITS — unit settings for distances and areas