Dual usage level marking instrument

Details Dual usage level marking instrument Dual usage level marking instrument

1997-06-10

1999-10-19

Hirshfeld, Andrew

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

33275R, 33290, 33384, 33DIG21, G01C 928, G01C 500

Patent

active

059668261

ABSTRACT:
A dual usage level marking instrument is provided that includes a leveling rod. This rod has a dotted-type laser device fixed at one end and a straight-type laser device fixed at the other end. Leveling elements are installed on this rod. The dotted-type or straight-type device installed on the both ends emit dotted or vertical/horizontal marking lines. The instrument is used on construction sites for marking measurement.

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patent: 5713135 (1998-02-01), Acopulos

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