GB191002468A - Surveying Instrument. - Google Patents
Surveying Instrument.Info
- Publication number
- GB191002468A GB191002468A GB191002468DA GB191002468A GB 191002468 A GB191002468 A GB 191002468A GB 191002468D A GB191002468D A GB 191002468DA GB 191002468 A GB191002468 A GB 191002468A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rod
- telescope
- distance
- gives
- stadia
- 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
- G01C3/00—Measuring distances in line of sight; Optical rangefinders
- G01C3/26—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with fixed angles and a base of variable length, at, near, or formed by the object
- G01C3/28—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with fixed angles and a base of variable length, at, near, or formed by the object with provision for reduction of the distance into the horizontal plane
- G01C3/30—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with fixed angles and a base of variable length, at, near, or formed by the object with provision for reduction of the distance into the horizontal plane with adaptation to the measurement of the height of an object, e.g. tacheometers
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
2468. Curtis, F. Feb. 1. Range-finders.-By the use of a series of differentlyspaced stadia wires in openings in a slide 46, Fig. 7, movable across the axis of a telescope 10 in its focal plane, one set can be found which subtends a known length on a distant stadia rod 50 and thus gives the distance. To determine the distance of another point D, above the first as in tree measuring, a rod 16 movable in a direction at rightangles to the axis of the telescope is adjusted until a scale on its edge gives a reading corresponding to the ascertained distance A', a second graduated rod 21 pivoted to it is set parallel to the telescope, and the telescope is turned to view the point D. A third rod 38 pivoted to the first then gives, by its intersection with the second rod, the distance of D. A set of stadia wires can then be selected and the width of the tree at D ascertained.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB191002468T | 1910-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB191002468A true GB191002468A (en) | 1911-05-01 |
Family
ID=32560234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB191002468D Expired GB191002468A (en) | 1910-02-01 | 1910-02-01 | Surveying Instrument. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB191002468A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2785466A (en) * | 1954-12-21 | 1957-03-19 | Eugene L Foster | Stadia topograph |
| US2960772A (en) * | 1958-01-02 | 1960-11-22 | Robins Seymour | Visual aid for vehicle operator |
| US3507044A (en) * | 1966-07-14 | 1970-04-21 | Francis E Frank Morrell | Surveying instrument |
-
1910
- 1910-02-01 GB GB191002468D patent/GB191002468A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2785466A (en) * | 1954-12-21 | 1957-03-19 | Eugene L Foster | Stadia topograph |
| US2960772A (en) * | 1958-01-02 | 1960-11-22 | Robins Seymour | Visual aid for vehicle operator |
| US3507044A (en) * | 1966-07-14 | 1970-04-21 | Francis E Frank Morrell | Surveying instrument |
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