FR565392A - - Google Patents
Info
- Publication number
- FR565392A FR565392A FR565392DA FR565392A FR 565392 A FR565392 A FR 565392A FR 565392D A FR565392D A FR 565392DA FR 565392 A FR565392 A FR 565392A
- Authority
- FR
- France
- 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
- G01C17/20—Observing the compass card or needle
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR565392A true FR565392A (en:Method) | 1924-01-25 |
Family
ID=1539017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR565392D Expired FR565392A (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR565392A (en:Method) |
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0
- FR FR565392D patent/FR565392A/fr not_active Expired