I would have given this set of rulers a 5 out of 5 if they didn't come dirty with some kind of dirty grungy coating all over the edges of my rulers. My rectangular 8 1/2 x 10 1/2 ruler came broken. So I'm not really impressed. Actually, this was the first time I've bought something from Massdrop that's arrived in this condition. Rulers looked used, and the biggest ruler broken :(