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Portable, lightweight measuring instrument

  • US 4,077,129 A
  • Filed: 09/07/1976
  • Issued: 03/07/1978
  • Est. Priority Date: 12/29/1975
  • Status: Expired due to Term
First Claim
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1. A portable, lightweight measuring instrument comprising:

  • a. a main beam;

    b. a slider mounted to slide longitudinally of said main beam;

    c. a rack extending longitudinally along said main beam;

    d. a dial gauge attached to said slider, said dial gauge having a pointer driven by a first pinion meshing with said rack to indicate a portion of the displacement of said slider relative to said main beam, said dial gauge including dial means rotatable relative to the pointer for adjusting the dial gauge to zero; and

    e. a counter separate from said dial gauge attached to said slider and driven by a second pinion meshing with said rack to indicate an additional portion of the displacement of the slider relative to the beam, so that the total displacement of the slider is indicated by the dial gauge and counter, said counter being attached to said slider for zero adjustment by means attaching the counter to the slider for longitudinal adjustment with respect to the slider.

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