Is This Content Helpful?
We're glad to know this article was helpful.
Instructions provided describe how to calculate the reference scale for import CAD annotation. CAD text is defined in map units. ArcGIS annotation is defined in points, which are defined as a viewing size of 1/72 of an inch. An ArcGIS reference scale is required to define a correlation between the text sizes from CAD to display points in ArcMap.
The Import CAD Annotation tool uses the reference scale to determine the size of the annotation in ArcMap. When a map is printed or viewed at the reference scale, the text appears at the target size in points.
The following is the procedure to calculate the proper reference scale. This algorithm creates a ratio between the initial text size in map units and the target size in points relative to the reference scale. A sample application is available, by way of the Related Information section below, that performs this calculation.
The following is a description of the steps needed to calculate the reference scale manually.