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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0940406 (1986-12-11) |
우선권정보 | CH-0000185 (1986-01-18) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 35 인용 특허 : 0 |
A laser beam levelling instrument has a pipe length which is vertically and centrally mounted in the cover of a casing. The ends of this pipe length are pivotable, so that it can always be held in the vertical position. For this purpose two spirit levels are arranged at right angles to one another o
A laser beam levelling instrument having means for producing a vertical laser beam and rotary reflection means for deflecting said vertical laser beam into a horizontal beam, at least said beam deflecting means being mounted on a pipe length which is suspended vertically in a bearing about which it
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