Keep us posted! A lot of us have had a lot of trouble with them. A year or more ago I was in discussion with the "CEO" because even after replacing the small and the large (6 x 24") ones I bought at the store and then having the company replace them they just chewed up my blades. The first ones I got - the metal "sharpener" edge stuck out beyond the plastic ruler edge making them measure bigger. I wrote a whole explanation with pictures when I sent the rulers back. The 1/4" measurement is crucial to trimming my pieces and the rulers were a dead loss for that.
Sorry to be negative, but wanted you to check yours while there is still time to return them by looking at the short end to see if the metal sticks out (mine was even angled so the blade wanted to ride up on it). And measure this ruler by another for the 1/4" and other dimensions. You may be able to search the board for other posts.