GB320561A - An improved cross-staff for surveying purposes - Google Patents
An improved cross-staff for surveying purposesInfo
- Publication number
- GB320561A GB320561A GB3534628A GB3534628A GB320561A GB 320561 A GB320561 A GB 320561A GB 3534628 A GB3534628 A GB 3534628A GB 3534628 A GB3534628 A GB 3534628A GB 320561 A GB320561 A GB 320561A
- Authority
- GB
- United Kingdom
- Prior art keywords
- theodolite
- line
- slide
- staff
- members
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Toys (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Food-Manufacturing Devices (AREA)
Abstract
320,561. Elder, A. S. W. Nov. 30, 1928. Cross-staves. - A surveyor's cross-staff enabling a rightangle offset to be laid off from any desired point along a given line comprises a base 1 on which are mounted vertical members 3, 5 which can be adjusted in slots 12 and are connected by a crosspiece 11. A plate 8 mounted on the member 11 is slotted to receive a slide 7 on which are mounted the sights 10 having their axis at right-angles to the centre line of the members 3, 5. The slide also carries a hook for attachment of a plumb-line. The members 3, 5 are first brought into the line of sight of a theodolite and are secured by clamps 4, 6. A tape is then run out from the theodolite and the slide 7 is adjusted until the plumb-bob is at the desired distance from the centre of the theodolite. The right-angle offset is then laid off by means of the sights 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3534628A GB320561A (en) | 1928-11-30 | 1928-11-30 | An improved cross-staff for surveying purposes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3534628A GB320561A (en) | 1928-11-30 | 1928-11-30 | An improved cross-staff for surveying purposes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB320561A true GB320561A (en) | 1929-10-17 |
Family
ID=10376702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3534628A Expired GB320561A (en) | 1928-11-30 | 1928-11-30 | An improved cross-staff for surveying purposes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB320561A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998039617A1 (en) * | 1997-03-06 | 1998-09-11 | Invicta Plastics Limited | Educational plane table apparatus |
| GB2335530A (en) * | 1997-03-06 | 1999-09-22 | Invicta Plastics Ltd | Educational plane table apparatus |
-
1928
- 1928-11-30 GB GB3534628A patent/GB320561A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998039617A1 (en) * | 1997-03-06 | 1998-09-11 | Invicta Plastics Limited | Educational plane table apparatus |
| GB2335530A (en) * | 1997-03-06 | 1999-09-22 | Invicta Plastics Ltd | Educational plane table apparatus |
| GB2335530B (en) * | 1997-03-06 | 2000-10-11 | Invicta Plastics Ltd | Educational plane table apparatus |
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