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Title: Performs it's main function poorly
Review: Basically a great idea, except that the one thing that it needs to do, hold an offset, it doesn't do well. Too tight and you can't adjust it, too loose (which can seem like nice and tight) and it won't hold it's setting. I scuffed up the bearing surfaces with some course sandpaper, but it's still mediocre. I primarily use this tool for scribing chair legs once the chair is leveled for trimming. The ability to ride a flat reference, and extend a pencil a little bit if I need to is great, but it needs some knurled bearing surfaces or something, at least in the main elbow joint.
