MarkerInbound
Not saying your wrong but I'd like to see some guidance on that. Usually the term "barb" refers to the (in this case) 299/119 line. As in "The protected airspace is on the side with the barb." The little triangle at the end of the 299/199 line is just a printing thing to mark the end of the line.
Indeed you are correct and I was mistaken. I meant to write "In this case the barb on the procedure turn indicates a left turn
outbound" And indeed, the barb itself is merely printed to mark the end of the line.
One can however indeed turn inbound either left or right and the side the barb is printed on can be used a 'hint' or reminder as to which turn direction inbound will provide a bigger margin of safety while remaining within the 10 NM protected area. (Wind depending of course).