GB155379A - Improvements in calculating instruments - Google Patents
Improvements in calculating instrumentsInfo
- Publication number
- GB155379A GB155379A GB2311919A GB2311919A GB155379A GB 155379 A GB155379 A GB 155379A GB 2311919 A GB2311919 A GB 2311919A GB 2311919 A GB2311919 A GB 2311919A GB 155379 A GB155379 A GB 155379A
- Authority
- GB
- United Kingdom
- Prior art keywords
- angles
- plane
- arm
- calculating instruments
- gallier
- 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
- G01C1/00—Measuring angles
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G1/00—Hand manipulated computing devices
- G06G1/02—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales
- G06G1/04—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
155,379. Gallier, W. H., (MacGillivray, J.). Sept. 19, 1919. Plane-trigonometry calculators. - A plane trigonometric calculator for use in surveying, navigation &c. comprises a quadrant-shaped base member 1 provided with two linear scales 3, 4 at right-angles and with a graduated arm 7 pivoted at the origin 6 and movable over a scale of angles 5. Co-ordinates may be drawn as shown and the arm may have clamping-means 11 and a vernier 13 projecting on one or both sides.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2311919A GB155379A (en) | 1919-09-19 | 1919-09-19 | Improvements in calculating instruments |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2311919A GB155379A (en) | 1919-09-19 | 1919-09-19 | Improvements in calculating instruments |
Publications (1)
Publication Number | Publication Date |
---|---|
GB155379A true GB155379A (en) | 1920-12-20 |
Family
ID=10190399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2311919A Expired GB155379A (en) | 1919-09-19 | 1919-09-19 | Improvements in calculating instruments |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB155379A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3141241A (en) * | 1960-07-21 | 1964-07-21 | David H Scott | Aerial navigation device |
FR2467088A1 (en) * | 1978-04-26 | 1981-04-17 | Brighty Sidney | DEVICE FOR MARKING POINTS ON A DRAWING SURFACE |
US4303299A (en) * | 1979-05-21 | 1981-12-01 | Clark Gary R | Hand-held instrument for inspecting drill bits |
-
1919
- 1919-09-19 GB GB2311919A patent/GB155379A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3141241A (en) * | 1960-07-21 | 1964-07-21 | David H Scott | Aerial navigation device |
FR2467088A1 (en) * | 1978-04-26 | 1981-04-17 | Brighty Sidney | DEVICE FOR MARKING POINTS ON A DRAWING SURFACE |
US4303299A (en) * | 1979-05-21 | 1981-12-01 | Clark Gary R | Hand-held instrument for inspecting drill bits |
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