| 摘要 |
An apparatus and method are provided for indicating the location of a device such as a machine tool component or an inspection probe so as to permit the automatic control thereof or the derivation of information defining its position for automatically measuring the dimensions of a work piece. The apparatus includes a scale containing digital information recorded along its length and a photo-optical scanning means for the scale operable to generate a parallel code on its output, such as a binary code, which is indicative of the relative location of the scanning means and the scale.
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