I want to show how I place and label contour lines in ArcMap. I´d read a lt of topics but I didn´t found something like this.
The idea is place the label where you want creating perpendicular line features that you use for create buffer polygons.
The buffer distance must be the half of label size or label length .
You use the buffer polygon for clip and erase the original contour feature.
You label the clip contour feature with the altitude attribute. You haven´t to write labels one by one or change the angle orposition
You simbolize the clip contour lines with " no color".
For the layout you use the clip and the erase contour features.
I show you the final result and the elected location for the labels on the pdf map.
I hope it´d be useful for someone