Mini square wood work

About 4" square, for table saw, drill press, or router table. Has center marking, 1/4" serrations, 1/4" 3/8" 1/2" #8 & #6 drill sizing, 1/4" incremented steps for drill set, R.1/4" & R.1/2", 1/4" hole to drill center of rod. You need 1/4" X 1" dowels hammered in for the center finder.