Pretty disappointed with this one. It seems very cheap in almost every way. The aluminum ruler feels like the thinnest piece of metal. And the fit and finish was really bad. There are two strips on the underside that appear to be where the aluminum meets the plastic body. There was a ton of glue that had leaked out and was proud of the flat edge, basically rendering it useless until I removed the glue. Basically, it seems pretty accurate at the moment, but I'm not at all sure about assembly. Quality so I don't believe in continuing to use it.