PRO TOUCH OFF GAGE http://www.edgetechnologyproducts.com This tool setter will allow you to set your CNC tool length offsets quickly and accurately. To use this gage, just lower the tool down on the contact face of the gage until the indicator reads 0.000. At that point, you can be confident that the tip of your tool is exactly 4.000 from the surface the gage is sitting on. This tool setter can also be used for Bridgeport style milling machines.