Geometrical instruments – Straight-line light ray type – Horizontal angle measurer
Reexamination Certificate
2006-05-30
2006-05-30
Guadalupe, Yaritza (Department: 2859)
Geometrical instruments
Straight-line light ray type
Horizontal angle measurer
C033S278000, C033S415000, C033S471000, C033SDIG021
Reexamination Certificate
active
07051445
ABSTRACT:
An improved apparatus generating light illuminated line provides a possibility to produce and propagate the light line along the reference surface under any desirable angle. The improved apparatus generating light illuminated line includes a circular scale means comprising a degree scale and two projections, each of which includes an aperture intended for an appropriate fixing means. Each fixing means comprises a handle rigidly connected to a pin and a back-moving spiral spring located in a spring opening of the appropriate projection. Also, the improved apparatus generating light illuminated line includes a pivotable light line generating portion hingedly coupled with the circular scale means.
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