Information, Line length
Detects the length of a graphical element.
Information, Arc radius
Detects the radius of a circle or a circular arc.
Information, Distance 2 points
Detects the distance between two points.
Clicking 
opens a pull-down menu with the following functions:
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Information, X-distance, 2 points Detects the X-distance between 2 points (difference of the X-coordinates). |
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Information, Y-distance, 2 points Detects the Y-distance between 2 points (difference of the Y-coordinates). |
Information, Distance Point-Line
Detects the distance between a point and a line. The distance is the distance of this point from the calculated base point.
Detects the distance between two lines.
The calculated distance is assigned to the system variable 
