MB-Ruler can measure distances in the units
Use the popup menu of MB-Ruler and choose the optiona page
"distance&angle" in the item Options to set the scale to pixel,
centimeter, inch, points or twips.
- or a user defined scale
For all units (except pixel), you have to calibrate MB-Ruler, as it
is not possible to calculate the real physical values from the data
stored inside the operating system. Choose one of the value and
move the slider "correction factor" until the values in the field
below are correct.
User defined scale
There are two ways to set a user defined scale.:
- Choose the item Scale...definition in the MB-Ruler popup
menu and set the start and end point of the reference line. Edit
the real length and unit of the defined distance in the display
- Create a line as an overlay
object, that is equal to the reference line of the scale.. Open
the popup menu of the line and choose the item Use line as
reference line .... Edit the real length and unit of the
defined distance in the display dialog.