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Levelling and transit system

  • US 5,519,942 A
  • Filed: 03/02/1995
  • Issued: 05/28/1996
  • Est. Priority Date: 03/02/1995
  • Status: Expired due to Fees
First Claim
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1. A level comprising:

  • an elongated member having a flat top surface and a bottom surface separated by a thickened web;

    a selected end of said member having a slotted opening exposed at said end and at said top surface so as to define an opening having 90 degrees of exposure to ambient environment;

    a circular module rotatably disposed on said member selected end; and

    a laser beam generator secured to said module and being in alignment with said slotted opening for transmission of a laser beam from said member via said slotted opening.

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