Apparatus for correcting theodolites
US4136955A · kind A · utility
29Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1976 |
| Grant date | Jan 30, 1979 |
| Priority date | — |
| Expiry date | Aug 27, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C1/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The corrected values to compensate for errors in instrumental levelling of a theodolite and similar instruments are found by determining angles of elevation and/or horizontal directions, measuring the instrumental levelling errors, and calculating the error free values of the instrument.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.