BCA added a couple features that are really nice. The segments snap to 0, 90, and 180 degrees which is nice for folding into a freestanding T or L shape. Also, each end has 0cm on one side and 200cm on the other. This is nice because you don't have to unfold the whole thing to find the 0cm mark, you just flip it over. I prefer it this way over 0 cm on one side and 0 inches on the other because inches are pointless.