Self-aligning, self plumbing baseline instrument

Details Self-aligning, self plumbing baseline instrument Self-aligning, self plumbing baseline instrument

2007-09-11

2007-09-11

Guadalupe-McCall, Yaritza (Department: 2859)

Geometrical instruments

Straight-line light ray type

Alignment device

C033S283000, C033SDIG021

Reexamination Certificate

active

10873538

ABSTRACT:
A self aligning baseline instrument including a first light assembly operable to generate a first vertical light plane, a second light assembly operable to generate a second vertical light plane at a predetermined angle to the first vertical light plane, a third light assembly operable to generate a first horizontal light plane that is perpendicular to the first and second vertical light planes, and a fourth light assembly operable to generate a vertical plumb light beam that defines a reference point on an underlying surface, the vertical light beam parallel to and coincident to the center axis of the instrument. The first and second vertical light planes and fourth plumb laser beam all intersect together through the center axis of the instrument.

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