Distance Tool 
The
Distance Tool measures the distance between two points. Click
on the distance tool and drag 'n' drop it onto the image viewer. The
values will appear. As you grab either of the two end points
and move them around the values will change accordingly.
Right-click
on one of the ends of the distance location arrow to bring up the IPDistance Entity edit box, as
seen below. Selecting the Distance tab will allow you to adjust the format and choose if you want to flip distance arrow ends to point in or out.

Selecting
the Entity tab allows you to adjust the colors, thickness, size, type and
visibility of the distance marker. You can also select a
Coordinate System. Make the necessary adjustments, click
Apply and then Close. The values will be updated according to
your selections.

Selecting
the Render Style
tab allows you to adjust the colors, font, style and appearance of
the distance value. Make the necessary
adjustments, click Apply and then Close. The style of the color distance value will be updated
according to
your selections.

Selecting the Line tab allows you to enter specific
values for the two X, Y, and Z coordinates. After entering your
values, click Close. The distances will be recalculated
according to the values selected.
