Level/plumb indicator with tilt compensation
作者： Henry L. Schwartz , Joseph Francis Rando
DOI:
关键词: Line (text file) 、 Beam (nautical) 、 Plumb bob 、 Tilt (optics) 、 Compensation (engineering) 、 Vertical orientation 、 Laser diode 、 Optics 、 Diode 、 Engineering
摘要: A tool for use in establishing a precise level line or plumb alignment uses visible laser diode projecting the line. The is relatively small and compact, drives using batteries contained tool, includes tilt compensation on surfaces which are not level, up to about 5° off still delivering truly horizontal beam. manual selector device provided shifting beam from vertical orientation when desired. Specific forms of apparatus disclosed.
google.co.in参考文章(5)
Joseph F. Rando, Gary L. Cain, Theodore J. Markley, Ted L. Teach, Lawrence J. Meyers, Self leveling transmitter for laser alignment systems ,(1986)
L Ekstrom, E Ljungdahl, Producing a plane or conical optical reference surface ,(1971)
Cindrich I, Aleksoff C, Klooster A, Laser alignment device ,(1973)
Robert Genho, Laser level and square ,(1974)