Aligned dimension

[Sushobhan.C]

How to give alingned dimension(Horizontally) in the sectional view .The one element selected but another line unable to select. Please find the attached image for your reference.

[aleksei.tkachenko]

It happens sometimes when you put dimension on objects that are part of reference.

Try to press Tab-button few times so that you will be able to snap to some point on the object.

Problem can also occur when section plane is not parallel with object that you are measuring.