On the Tools menu click Snaps to select Distance Along when the command prompt requests a point to use this modifier.
DISTANCE ALONG selects a point at a specified distance of the referenced entity’s length. For most referenced entities, DISTANCE ALONG treats the nearest endpoint from the selection point as its beginning. As with all modifiers, you must first select a drawing or editing command. The prompt reads "Distance along [0.000]:". Enter a number. For example, to select a point 1.5 inches of the way along a 10-inch line, type "1.5" and press ENTER. Now the prompt reads "Select reference entity:". Selecting a point on the entity you reference controls which end CC3 starts from when calculating the distance. You can use distance values less than 0 on some entities. For example, you could use " 2" to select a point 2 units beyond the end of a line.
Entity |
Distance Along value locks to |
Arc, Elliptical Arc |
Distance along circumference, from nearest selected end |
Arrow, Line, Path, or Polygon |
Distance from end or node nearest selection point |
Circle |
Distance along circumference, counter-clockwise from 0° end |
Ellipse |
Distance along circumference, counter-clockwise from higher end of major (long) axis. |
Point |
On the point |
Smooth Polygon or Spline |
Distance along curve, from 1st node (values <0 act like 0) |
Text |
Distance along baseline, from end nearest selection point |
Text equivalent: DIST (or press function key F8)