My original manual says height from top of top slide to center line of lathe is 1-7/8 inches. My square tool post cuts a little high (Enco... not the sales internet guys). Best I can measure is 1.74 to 1.75 inches. Used 0.001 height gage and tenths micrometers on around half inch bar sticking out 3 inches from chuck and less than 0.001 TIR. Trying to eyeball to mark on tail stock for center is 'iffy' to a few thou. Anyone have experience measuring center on lathe or with the square tool post. The toolpost appears to have up to 0.009 height difference from the bottom of the cylinder that goes on the top of the top slide. Bob