Browse CADPlotting articles about drawing scale, viewport scale and output verification. This category collects metric, architectural and engineering scale workflows together with viewport setup and scale-checking references. Use the main Scale & Viewports hub for the broader learning path.
If the scale you need is missing from the viewport list, first select the viewport correctly, then use SCALELISTEDIT to inspect or add drawing scales. Do not use random zooming to imitate the missing scale.
For a typical millimetre-based AutoCAD model, the safest Layout workflow for 1:50 is simple: keep the model full size, set the viewport to 1:50, keep the Layout output at 1:1, then verify the PDF at 100%.
Set annotation scale from the status bar for Model Space or from the selected Layout viewport. The correct annotation scale lets annotative text, dimensions and symbols display at their intended paper size.
Use SCALELISTEDIT when your office needs a legitimate scale that is not in the standard list. Add the scale once, name it clearly, then select it normally from the viewport scale list.
For a typical millimetre-based AutoCAD model, the safest Layout workflow for 1:100 is simple: keep the model full size, set the viewport to 1:100, keep the Layout output at 1:1, then verify the PDF at 100%.
If annotative text is huge, tiny or missing, do not change viewport scale first. Check the text style/object’s Annotative setting, current annotation scale and the scale representations assigned to the object.
Resetting the AutoCAD scale list removes custom and unused scales and restores the drawing’s default list. Use it only after checking whether your project depends on office-specific or annotative scales.
For a typical millimetre-based AutoCAD model, the safest Layout workflow for 1:200 is simple: keep the model full size, set the viewport to 1:200, keep the Layout output at 1:1, then verify the PDF at 100%.
LTSCALE, PSLTSCALE and MSLTSCALE control different parts of linetype display. LTSCALE is the global pattern factor, PSLTSCALE controls viewport/paper-space behavior, and MSLTSCALE relates Model Space display to annotation scale.