FR347222A - Orientation device - Google Patents
Orientation deviceInfo
- Publication number
- FR347222A FR347222A FR347222DA FR347222A FR 347222 A FR347222 A FR 347222A FR 347222D A FR347222D A FR 347222DA FR 347222 A FR347222 A FR 347222A
- Authority
- FR
- France
- Prior art keywords
- orientation device
- orientation
- 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 |
---|---|---|---|
FR347222T | 1904-10-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR347222A true FR347222A (en) | 1905-02-28 |
Family
ID=1395872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR347222D Expired FR347222A (en) | 1904-10-19 | 1904-10-19 | Orientation device |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR347222A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4404752A (en) * | 1981-06-03 | 1983-09-20 | Hanna John W | Clip-on compass |
-
1904
- 1904-10-19 FR FR347222D patent/FR347222A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4404752A (en) * | 1981-06-03 | 1983-09-20 | Hanna John W | Clip-on compass |
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