73172040
May 26, 1978
Jan 6, 1981
Automatic Calibration Apparatus for Machine Tools for the Machining of Cylindrical or Plane Pieces, With or Without Pairing, and Control and Positioning Apparatus for Machine Tools Employed in the Manufacture of Precision Pieces and Instruments for Relative and Differential Measurements of Lengths and Diameters, Provided with an Indicating Display and Instruments for the Absolute Measurements of Lengths, Provided with an Indicating Display
Electrical and Scientific Apparatus