FR21592E - Magnetic compass - Google Patents
Magnetic compassInfo
- Publication number
- FR21592E FR21592E FR21592A FR21592DA FR21592E FR 21592 E FR21592 E FR 21592E FR 21592 A FR21592 A FR 21592A FR 21592D A FR21592D A FR 21592DA FR 21592 E FR21592 E FR 21592E
- Authority
- FR
- France
- Prior art keywords
- magnetic compass
- compass
- magnetic
- 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
- G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
- G01C17/02—Magnetic compasses
- G01C17/04—Magnetic compasses with north-seeking magnetic elements, e.g. needles
- G01C17/10—Comparing observed direction with north indication
- G01C17/12—Comparing observed direction with north indication by sighting means, e.g. for surveyors' compasses
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR21592T | 1919-08-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR21592E true FR21592E (en) | 1920-11-15 |
Family
ID=8660601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR21592A Expired FR21592E (en) | 1919-08-13 | 1919-08-13 | Magnetic compass |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR21592E (en) |
-
1919
- 1919-08-13 FR FR21592A patent/FR21592E/en not_active Expired
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