Level
US4073062A · kind A · utility
Inventor
Key dates
| Filing date | Oct 20, 1976 |
| Grant date | Feb 14, 1978 |
| Priority date | — |
| Expiry date | Oct 20, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C9/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A level comprises a frame including a working surface, a level vial containing bubble indicating means and having bubble registry means adapted to register a level position when the longitudinal axis of the vial is positioned in a horizontal plane, and selectively adjustable mounting means for adjustably mounting the level vial to the frame for variable, selective angular alignment of the longitudinal axis thereof with respect to the plane of the working surface whereby the preselected orientation of the bubble indicating means with the register means of the level vial indicates a pre-selected angular relationship of the longitudinal vial axis and the working surface when the working surface is in contact with a surface being measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.