GB472794A - Improvements in or relating to compasses - Google Patents
Improvements in or relating to compassesInfo
- Publication number
- GB472794A GB472794A GB3256/37A GB325637A GB472794A GB 472794 A GB472794 A GB 472794A GB 3256/37 A GB3256/37 A GB 3256/37A GB 325637 A GB325637 A GB 325637A GB 472794 A GB472794 A GB 472794A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- disc
- kjellstrom
- mirror
- compasses
- 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)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
472,794. Magnetic compasses. KJELLSTROM, B., and KJELLSTROM, A. Feb. 3, 1937, No. 3256. Convention date, July 24, 1936. [Class 97 (ii)] A graduated disc 4 is rotatably mounted on the top of the casing 1 containing the needle 2, an index line is defined by a central mark 7 on the disc 4 and one or more marks 5 or the top of the casing 1 adjacent the graduations on the disc 4 and a mirror 9 preferably or the hinged lid 8 is provided with an aiming line 10. In a modification, a non - pivoted mirror which may be fixed in different positions relatively to the casing 1 is provided.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE472794X | 1936-07-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB472794A true GB472794A (en) | 1937-09-30 |
Family
ID=20310346
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3256/37A Expired GB472794A (en) | 1936-07-24 | 1937-02-03 | Improvements in or relating to compasses |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB472794A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007278957A (en) * | 2006-04-11 | 2007-10-25 | Chugoku Electric Power Co Inc:The | Railroad angle measuring apparatus |
-
1937
- 1937-02-03 GB GB3256/37A patent/GB472794A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007278957A (en) * | 2006-04-11 | 2007-10-25 | Chugoku Electric Power Co Inc:The | Railroad angle measuring apparatus |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB472794A (en) | Improvements in or relating to compasses | |
GB366210A (en) | Improvements relating to field or marching compasses | |
GB520604A (en) | A counting or registering device for use in knitting | |
GB561336A (en) | Improvements in and relating to pocket compasses | |
GB357925A (en) | Improvements in drawing and like squares | |
GB458140A (en) | Improvements in damping means for movable indicators such as inclinometers | |
GB352755A (en) | Improvements in drafting instruments | |
GB494997A (en) | Improvements in nautical course correctors | |
GB472798A (en) | Orientation compass | |
GB543088A (en) | Improvements in exposure meters | |
GB410631A (en) | Improvements in or relating to indicators for displaying variable data | |
GB456415A (en) | Improvements relating to dial-and-pointer indicating means | |
GB540294A (en) | An improved indicating device for dial instruments | |
GB520864A (en) | Improvements in or relating to map holders | |
GB196831A (en) | Improvements in or relating to turn indicators for aircraft | |
GB196413A (en) | Improvements relating to the cases or covers of measuring, indicating or recording instruments | |
GB484325A (en) | Improvements in instruments of the running wheel type for measuring the lengths of lines | |
GB504862A (en) | Improvements in calendars | |
GB478053A (en) | Improvements in plotting and computing devices | |
GB589748A (en) | Device for the re-education and/or gymnastics of the eyes | |
GB496025A (en) | Sighting instrument for measuring angles | |
GB490802A (en) | Improvements in or relating to paper cutting machines | |
GB550499A (en) | Improvements in magnetic compasses | |
ES5358U (en) | Photoelectric exposure meter (Machine-translation by Google Translate, not legally binding) | |
GB510220A (en) | Combined protractor and calculating device for use in navigational problems |