For outlines you use the dimension layer. As that image is repetitive you could draw the first bit, change the snap grid to the repeat pitch you want and simply cut & paste. You can use coordinates - I use them for making complex library parts. Don't forget you can scroll through the command history using the arrogant keys so if you draw a line in positive coordinates and want to repeat it in negative, you can scroll to the last command and change the sign of the coordinate(s) and press enter to save typing it all again.
Keith