Comments about Westcott® 6" Shatterproof Plastic Ruler:
I like the size of the ruler, and the plastic used lets you see well where you are marking. Furthermore I like the idea of the central line, as it helps you draw a parallel line if and when you need to. However the ruler is not that durable. I am a college student and after 6 months of regular use, with it being kept in my backpack when not in use, the ruler has developed a crack down the central line, and furthermore the edge has grown jagged, which is annoying because it doesn't draw a straight line anymore.