I use the angled ruler technique often and I might mention, you can use any even multiple of the desired segments i.e. if you want to divide the board into thirds, lay the angled ruler 0 one end and angled so 9 is on the other, make your marks at 3 and 6.
However if you are making a story stick which is only 3/4" wide, the angled ruler is no help but a sector is. The sector I made definitely works, but not to the precision of dividers so I use it to get in the ballpark, and if the task demands precision, I then walk it with dividers to fine tune the accuracy. A sector looks very impressive hanging on the wall but if you gave me the choice of a having a sector or a pair of dividers I'd take the dividers any day.