Method and apparatus for determining reference levels and flatness of a surface
US7204027B2 · kind B2 · utility
16Cited by
10References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 15, 2005 |
| Grant date | Apr 17, 2007 |
| Priority date | — |
| Expiry date | Feb 15, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C15/004
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus are presented for a laser tool used for direct indication of a level surface. This embodiment may also be used to transfer a level elevation from one level surface to a neighboring surface. The device may also be used to indicate the degree of flatness of a surface by direct observation. An alternative embodiment can provide a direct indication of plumb surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.