I was sick and tired of tapping the side of my fence only to go too far and ruining a piece that needed an exact cut. So I decided to make the micro adjuster. Just slide it in the rail and push up against the fence and lock it in. Now I can cut ex.
Woodworking Math Tables, Formulas and Calculators - Part III - On the page you'll find formulae for calculating the dimensions and angles necessary to build multi-sided shapes and tables containing dimensions and angles for common sizes of polygons.