NL52574C - - Google Patents
Info
- Publication number
- NL52574C NL52574C NL52574DA NL52574C NL 52574 C NL52574 C NL 52574C NL 52574D A NL52574D A NL 52574DA NL 52574 C NL52574 C NL 52574C
- Authority
- NL
- Netherlands
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
-
- 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)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL52574C true NL52574C (fi) |
Family
ID=1810432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL52574D NL52574C (fi) |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL52574C (fi) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2488605A (en) * | 1948-02-04 | 1949-11-22 | Jean E Progneaux | Sundial |
| DE1296392B (de) * | 1965-02-16 | 1969-05-29 | Datawell Nv | Kompass |
-
0
- NL NL52574D patent/NL52574C/xx active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2488605A (en) * | 1948-02-04 | 1949-11-22 | Jean E Progneaux | Sundial |
| DE1296392B (de) * | 1965-02-16 | 1969-05-29 | Datawell Nv | Kompass |
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