Tom is correct, you don't really need expensive tools to do a very credible job of setup. Some of the settings, especially VTA, is something you will want to hone in by ear anyway.
On the subject of scales, the Shure gauge works fine in most all applications. Make sure you get the non-magnetized later version, though. I recently bought a small pocket digital scale that works very nicely, indeed, and is accurate to 0.01 gr. It is a bit more than the Shure gauge, but not on the order of, say, the $500+ they want for the Winds scales. I think I paid $63-something with all shipping included. I tested it with a 10gr, 25gr, and 50gr weight and the scale read them all dead-on. Please find the link below (there are others, of course).
http://saveonscales.com/js50.html
On the subject of scales, the Shure gauge works fine in most all applications. Make sure you get the non-magnetized later version, though. I recently bought a small pocket digital scale that works very nicely, indeed, and is accurate to 0.01 gr. It is a bit more than the Shure gauge, but not on the order of, say, the $500+ they want for the Winds scales. I think I paid $63-something with all shipping included. I tested it with a 10gr, 25gr, and 50gr weight and the scale read them all dead-on. Please find the link below (there are others, of course).
http://saveonscales.com/js50.html