GB1058367A - Improvements in or relating to levelling staffs - Google Patents
Improvements in or relating to levelling staffsInfo
- Publication number
- GB1058367A GB1058367A GB5214264A GB5214264A GB1058367A GB 1058367 A GB1058367 A GB 1058367A GB 5214264 A GB5214264 A GB 5214264A GB 5214264 A GB5214264 A GB 5214264A GB 1058367 A GB1058367 A GB 1058367A
- Authority
- GB
- United Kingdom
- Prior art keywords
- staff
- levelling
- relating
- dec
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/02—Means for marking measuring points
- G01C15/06—Surveyors' staffs; Movable markers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
1,058,367. Levelling staves. N. R. WALLIS. Dec.21, 1965 [Dec.22, 1964], No.52142/64. Heading G1F. A surveyor's levelling staff comprises at least one mercury switch in circuit with a lamp at the head of the staff the contacts of the switch only being completed when the staff is vertical so that an indication of this is given to an operator sighting on the staff. The circuit may include an interrupter unit so that when the mercury switch contacts are closed the light flashes on and off.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5214264A GB1058367A (en) | 1964-12-22 | 1964-12-22 | Improvements in or relating to levelling staffs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5214264A GB1058367A (en) | 1964-12-22 | 1964-12-22 | Improvements in or relating to levelling staffs |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1058367A true GB1058367A (en) | 1967-02-08 |
Family
ID=10462788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5214264A Expired GB1058367A (en) | 1964-12-22 | 1964-12-22 | Improvements in or relating to levelling staffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1058367A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020106231A1 (en) * | 2018-11-23 | 2020-05-28 | Ozyegin Universitesi | Geodetic levelling staff and method of use thereof |
-
1964
- 1964-12-22 GB GB5214264A patent/GB1058367A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020106231A1 (en) * | 2018-11-23 | 2020-05-28 | Ozyegin Universitesi | Geodetic levelling staff and method of use thereof |
US20220011109A1 (en) * | 2018-11-23 | 2022-01-13 | Ozyegin Universitesi | Geodetic levelling staff and method of use thereof |
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