AT178209B - Telescope with a line of sight which forms a constant angle with the plumb line regardless of minor movements of the telescope by using a movable mirror whose position is influenced by gravity - Google Patents
Telescope with a line of sight which forms a constant angle with the plumb line regardless of minor movements of the telescope by using a movable mirror whose position is influenced by gravityInfo
- Publication number
- AT178209B AT178209B AT178209DA AT178209B AT 178209 B AT178209 B AT 178209B AT 178209D A AT178209D A AT 178209DA AT 178209 B AT178209 B AT 178209B
- Authority
- AT
- Austria
- Prior art keywords
- telescope
- line
- sight
- influenced
- gravity
- Prior art date
Links
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE178209X | 1952-02-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT178209B true AT178209B (en) | 1954-04-26 |
Family
ID=5704865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT178209D AT178209B (en) | 1952-02-19 | 1953-02-14 | Telescope with a line of sight which forms a constant angle with the plumb line regardless of minor movements of the telescope by using a movable mirror whose position is influenced by gravity |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT178209B (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2855818A (en) * | 1954-07-29 | 1958-10-14 | Askania Werke Ag | Altitude reading means for a theodolite |
US2938422A (en) * | 1955-12-23 | 1960-05-31 | Rolland L Hardy | Resiliently controlled differential tilting assembly for image stabilization and automatic levelling of optical instruments |
US2981141A (en) * | 1957-01-16 | 1961-04-25 | Hilger & Watts Ltd | Optical compensator and tilt detector |
DE1165885B (en) * | 1956-10-23 | 1964-03-19 | Hensoldt & Soehne Optik | Device for automatic leveling of the finish line |
US3220297A (en) * | 1959-02-26 | 1965-11-30 | Keuffel & Esser Co | Self compensating telescope level having fixed and pendulum mounted pairs of reflecting surfaces |
US4650324A (en) * | 1986-02-25 | 1987-03-17 | Realist, Inc. | Level Transit |
-
1953
- 1953-02-14 AT AT178209D patent/AT178209B/en active
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2855818A (en) * | 1954-07-29 | 1958-10-14 | Askania Werke Ag | Altitude reading means for a theodolite |
US2938422A (en) * | 1955-12-23 | 1960-05-31 | Rolland L Hardy | Resiliently controlled differential tilting assembly for image stabilization and automatic levelling of optical instruments |
DE1165885B (en) * | 1956-10-23 | 1964-03-19 | Hensoldt & Soehne Optik | Device for automatic leveling of the finish line |
US2981141A (en) * | 1957-01-16 | 1961-04-25 | Hilger & Watts Ltd | Optical compensator and tilt detector |
US3220297A (en) * | 1959-02-26 | 1965-11-30 | Keuffel & Esser Co | Self compensating telescope level having fixed and pendulum mounted pairs of reflecting surfaces |
US4650324A (en) * | 1986-02-25 | 1987-03-17 | Realist, Inc. | Level Transit |
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