From the perspective on one who's been asked (maybe too many times) to build something from a drawing I'd like to comment.
(Feel free to ignore)
The dimension really isn't 'useful'.
If you gave the length of the straight AND the degrees of wrap on the angular those dimensions would help the fabrication.
Giving just the dimension (length) as its drawn would mean that I would have to calculate the other dimensions - - - - without an easy way to do that.
Suggest that perhaps both ideas (the dimension and the 2 numbers that develop the idea) be included.