GB1296886A - - Google Patents
Info
- Publication number
- GB1296886A GB1296886A GB1296886DA GB1296886A GB 1296886 A GB1296886 A GB 1296886A GB 1296886D A GB1296886D A GB 1296886DA GB 1296886 A GB1296886 A GB 1296886A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ruler
- trapezium
- march
- barros
- protractors
- 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
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/20—Instruments for performing navigational calculations
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Drawing Aids And Blackboards (AREA)
- Instructional Devices (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
1296886 Protractors; rulers F DE BARROS 12 March 1970 [13 March 1969] 11866/70 Headings G1M and G1X A measuring device comprises a flat, transparent isosceles trapezium 1 provided with two protractor scales 2, 3, and a ruler 6 attached to the base of the trapezium by a parallel linkage 7. The device which may be of polystyrene may be provided with equidistantly spaced parallel lines 5, 8 marked on the trapezium 1 and ruler 6, the ruler 6 being graduated in units of length. (For figure see next page)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PT5134169 | 1969-03-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1296886A true GB1296886A (en) | 1972-11-22 |
Family
ID=20081689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1296886D Expired GB1296886A (en) | 1969-03-13 | 1970-03-12 |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE747359A (en) |
CH (1) | CH516788A (en) |
DE (1) | DE2011821B2 (en) |
DK (1) | DK130371B (en) |
FR (1) | FR2038929A5 (en) |
GB (1) | GB1296886A (en) |
NL (1) | NL7003581A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2191290A (en) * | 1986-06-06 | 1987-12-09 | Iain Macleod | Depth gauge |
GB2191593A (en) * | 1986-06-13 | 1987-12-16 | Liu Bao Shen | Angle measuring instrument |
GB2192286A (en) * | 1986-06-27 | 1988-01-06 | Smiths Industries Plc | Parallel protractor rule |
GB2240405A (en) * | 1990-01-26 | 1991-07-31 | Forshaw Whittaker Christopher | Ophthalmic measures and templates |
GB2291717A (en) * | 1994-07-15 | 1996-01-31 | John Mary Patrick Broderick | Device for measuring and indicating angles |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105620126B (en) * | 2016-02-22 | 2017-10-31 | 桂林航天工业学院 | A kind of quick and precisely multipurpose plotter |
CN113561683B (en) * | 2021-08-27 | 2022-02-22 | 中国人民解放军军事科学院国防科技创新研究院 | Navigation plotting device and using method |
-
1970
- 1970-03-12 DK DK123970A patent/DK130371B/en unknown
- 1970-03-12 NL NL7003581A patent/NL7003581A/xx unknown
- 1970-03-12 GB GB1296886D patent/GB1296886A/en not_active Expired
- 1970-03-12 DE DE19702011821 patent/DE2011821B2/en active Granted
- 1970-03-13 BE BE747359D patent/BE747359A/en unknown
- 1970-03-13 CH CH383270A patent/CH516788A/en not_active IP Right Cessation
- 1970-03-13 FR FR7009151A patent/FR2038929A5/fr not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2191290A (en) * | 1986-06-06 | 1987-12-09 | Iain Macleod | Depth gauge |
GB2191593A (en) * | 1986-06-13 | 1987-12-16 | Liu Bao Shen | Angle measuring instrument |
GB2191593B (en) * | 1986-06-13 | 1990-04-25 | Liu Bao Shen | Angle measuring instrument |
GB2192286A (en) * | 1986-06-27 | 1988-01-06 | Smiths Industries Plc | Parallel protractor rule |
GB2240405A (en) * | 1990-01-26 | 1991-07-31 | Forshaw Whittaker Christopher | Ophthalmic measures and templates |
GB2240405B (en) * | 1990-01-26 | 1994-09-28 | Forshaw Whittaker Christopher | Ophthalmic measures and templates |
GB2291717A (en) * | 1994-07-15 | 1996-01-31 | John Mary Patrick Broderick | Device for measuring and indicating angles |
Also Published As
Publication number | Publication date |
---|---|
NL7003581A (en) | 1970-09-15 |
DK130371B (en) | 1975-02-10 |
DE2011821C3 (en) | 1974-05-30 |
CH516788A (en) | 1971-12-15 |
BE747359A (en) | 1970-08-17 |
FR2038929A5 (en) | 1971-01-08 |
DE2011821A1 (en) | 1970-10-08 |
DE2011821B2 (en) | 1973-10-31 |
DK130371C (en) | 1975-07-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |