GB112621A - Improvements in Course-indicators. - Google Patents
Improvements in Course-indicators.Info
- Publication number
- GB112621A GB112621A GB116/18A GB11618A GB112621A GB 112621 A GB112621 A GB 112621A GB 116/18 A GB116/18 A GB 116/18A GB 11618 A GB11618 A GB 11618A GB 112621 A GB112621 A GB 112621A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circle
- pivoted
- arm
- graduated
- course
- 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
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
112,621. Lindberg, J. H. Nov. 18, 1915, [Convention date]. Angle-measuring appliances; protractors. - A course indicator for use on maps and charts comprises a transparent rectangular member 1 to which is pivoted a protractor circle 5 carrying a pivoted graduated radius arm 9, the pivot 4 on which the circle is mounted being eccentric. The circle 5 has marked on it a radial line 6 in a direction passing through the North point of the circle 5 and through the zero of a graduated arc for use in setting the circle according to the magnetic declination with respect to the member 1, which carries an index-mark 3. The circle 5 has a part 7 cut out and the arm 9 is slotted at 15, the rings by which the latter is pivoted having corresponding openings.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE112621X | 1915-11-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB112621A true GB112621A (en) | 1918-06-13 |
Family
ID=32294432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB116/18A Expired GB112621A (en) | 1915-11-18 | 1918-01-02 | Improvements in Course-indicators. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB112621A (en) |
-
1918
- 1918-01-02 GB GB116/18A patent/GB112621A/en not_active Expired
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