GB190724305A - Improvements in and relating to Tacheometers. - Google Patents
Improvements in and relating to Tacheometers.Info
- Publication number
- GB190724305A GB190724305A GB190724305DA GB190724305A GB 190724305 A GB190724305 A GB 190724305A GB 190724305D A GB190724305D A GB 190724305DA GB 190724305 A GB190724305 A GB 190724305A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rod
- racked
- readings
- distances
- eyepiece
- 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)
- Telescopes (AREA)
Abstract
24,305. Despiau, D. Nov.- 3, 1906, [date applied for under Patents Act, 1901]. Telemeters; theodolites.-An instrum e n t for giving readings of distances by sighting a surveying-rod consists of a box with a peep - hole eyepiece o which can be racked up and down, and with two glass plates a, b in front, one being fixed and the other b movable. Up to small distances readings are taken direct on the rod, but for fairly large distances, the rod serves as a fixed length and, after adjusting the eyepiece till the horizontal line y on the p 1 a t e a registers with the bottom of the rod, the plate b is racked up till an horizontal z on it corresponds with the top. The spindle v, by which the plate b is racked up, also carries a pinion t taking into a wheel carrying a scale, which can be used to give direct readings of the distance. The whole instrument can be rotated in azimuth, and a compass f can be fitted to give directions.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR190724305X | 1906-11-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190724305A true GB190724305A (en) | 1908-10-29 |
Family
ID=32525358
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190724305D Expired GB190724305A (en) | 1906-11-03 | 1906-11-03 | Improvements in and relating to Tacheometers. |
GB190916452D Expired GB190916452A (en) | 1906-11-03 | 1909-07-14 | Improvements in and relating to Tacheometers. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190916452D Expired GB190916452A (en) | 1906-11-03 | 1909-07-14 | Improvements in and relating to Tacheometers. |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB190724305A (en) |
-
1906
- 1906-11-03 GB GB190724305D patent/GB190724305A/en not_active Expired
-
1909
- 1909-07-14 GB GB190916452D patent/GB190916452A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB190916452A (en) | 1910-04-21 |
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