Geometrical instruments – Straight-line light ray type – Vertical angle
Patent
1996-04-12
1998-07-28
Will, Thomas B.
Geometrical instruments
Straight-line light ray type
Vertical angle
33227, 33DIG21, G01C 1502
Patent
active
057847932
ABSTRACT:
A construction laser tool which projects a plumb beam is provided with a marking template, movable and separate from the tool's housing but securable to the housing, for transferring a point on a floor to the laser beam or, in another case, for transferring the beam to locate a point on the floor. The template has a marker such as a hole to receive a pencil, and the marker is positioned under the laser tool housing, on the vertical line of the plumb beam where the floor point of interest cannot be seen, when the plumb beam is projected at a point on the ceiling. To accurately mark the floor point, the user holds the template in place on the floor and moves the laser tool away to gain access to mark the point. The reverse procedure is used to align the plumb beam over a known point on the floor. Several arrangements involving sliding templates are disclosed.
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Freiburger Thomas M.
LeveLite Technology Inc.
Will Thomas B.
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