I had been looking at miter gauges for my table saw for some time, and was nearly convinced that I needed one of these $200 units. I came across this Vevor unit for $40, read the reviews and thought I would take a chance on it. It does not include all the bells and whistles, but is well made from quality materials and lines up dead accurate with my saw blade. The rail fits my table slots with zero motion. The long work fence is easily adjusted by means of an included Allen wrench for right or left hand use and includes a very easily adjustable flip stop for cutting repetitive lengths. The protractor includes pre drilled holes for all the common angles. There is the slightest amount of play, but if you press gently in the ccw direction as you tighten the locating pin and lock screw, it comes out perfect. I have checked it against a precision protractor, accurate to 15 seconds of angle (1/240 of a degree) and it was right on.