Ho do I place the dimension shown in red below (horizontal distance)? Note that point on the diagonal line at the right is not a keypoiint. So SE doesn't want to select it. It wants to select the nearest keypoint instead. I'm sure there's a way to do this, but it's not jumping out at me. Thanks!
Maybe you can draw in view, and inside the sketch environment insert 2 'virtual' points (horizontal aligned) in the desired ramdom position, and then can be able to pick to dimension them in the normal draft view.
Make sure "Intersection point" is checked in Intellisketch relationships.
It occurs to me now I misunderstood. Do you want to grab a point on the line that is horizontal to the intersection on the right? Then you have to add a point or horizontal line as @F_Hilario suggests. Not sure what mode you're in: part sketch, draft view, etc.?
Thanks for the replies.
I'm in the draft environment. I want to dimension the horizontal distance between the point on the left and the diagonal line on the right. I tried adding a point to the diagonal line (as F_Hilario suggested) but was unable to apply a horizonal constriaint to it. The tool would not select the point. I also tried drawing a line between the points, but when I dimensioned that it gave me the wrong value. It didn't account for the drawing scale.
I did find one way that worked. I used the centerline tool to drawing a horizonal between the points. The only glitch with that approach is I had to draw the line past the diagonal line. It would not connect to the line at the horizontal point, but instead would only connect at a key point. Going past allowed me to keep the line horizontal, and then when dimensioning I was able to snap to the intersection. So that worked, but seems like there should be a more direct way.
Thanks again for the help.
First, you need to do it in draw-in-view mode so that scale is taken care of.
Secondly, you should be able to add a horizontal constraint to a point from another point or keypoint location so have a look at your intellisketch settings. Edit: make sure "edit point" and "end point" are checked.
So the point would have two constraints: one to make it on the line and another to make it horizontal from a keypoint.
I wouldn't use a centerline. I would perhaps use a line on the autohide layer (put it on autohide after adding dim) or a new layer to hide later or font it somehow if you need it shown as a visual indicator.