Pictured on the right is the 2 1/2" Gauge Block Set which includes 1/8", 3/16", 1/4", 3/8", 1/2" Brass Gauges from Whiteside for setting depth of cut.  Nominal dimensions can be set  in quick and precise fashion by placing these gauges between the Stop Rod and Turret Stop Screws on our plunge base (or anyone else's) The set of 5 common fractional dimensions measure 2 1/2" in length.  Also available in 4" pictured below. Accuracy specs: +.001" / -.005"

  "4" Gauge Block Set