function Leadtools.Annotations.Core.AnnProtractorObject.getRulerLengthAsStringFromPoints( startPoint , endPoint , calibrationScale )
| Parameter | Type | Description |
|---|---|---|
| startPoint | LeadPointD | The starting point of the ruler. |
| endPoint | LeadPointD | The ending point of the ruler. |
| calibrationScale | double | The ratio of the horizontal resolution (dots per inch or DPI) to the vertical resolution. For most images, the ratio is 1. |
| Type | Description |
|---|---|
| string | The length of the ruler as a string based on the calibrationScale. |