The NEMI Tool Setting Gage accurately sets turning, boring and facing tools on the centerline of the work piece. This tool can also be used to set up grinding wheels on centerline of tool rest for cutter grinding and/or setting table stops on horizontal mills. Index hex, squares, etc., shapes on milling machines. All edges of the Tool Setting Gage are accurately machined and may be used for vial calibration to suit your intended use. The Vial may be positioned on either side of the body for easier use in different applications. The level of the machine is NOT important as the Tool Setting Gage is calibrated from the machine at the time of use.