ApplicationNo. 06/159652 filed on 06/16/1980
US Classes:356/498, Displacement or distance702/105For mechanical system
ExaminersPrimary: Corbin, John K.
Assistant: Koren, Matthew W.
Attorney, Agent or Firm
International ClassesG01B 11/02 (20060101)
G01D 18/00 (20060101)
Foreign Application Priority Data1976-04-24 RO
AbstractA method and an apparatus for dial indicator calibration comparing the real displacement of the dial indicator rod with its ideal linear displacement during each calibration interval given by the dial indicator hand, having a Michelson interferometer with a laser as a linear displacement transducer, an opto-electronic transducer to read the dial, indicator hand position for each calibration interval, an electronic control urgent which controls the operation of the whole apparatus and feeds to a printer the measuring errors in length units and the corresponding calibration intervals.