GB561633A - Device for measuring angles - Google Patents
Device for measuring anglesInfo
- Publication number
- GB561633A GB561633A GB1656742A GB1656742A GB561633A GB 561633 A GB561633 A GB 561633A GB 1656742 A GB1656742 A GB 1656742A GB 1656742 A GB1656742 A GB 1656742A GB 561633 A GB561633 A GB 561633A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mirror
- radio
- dial
- angle
- mark
- 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
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 abstract 1
- 230000000295 complement effect Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
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
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
561,633. Measuring angles. MARCONI'S WIRELESS TELEGRAPH CO, LTD, and 561,633. Measuring angles. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and MOON, J. H. Nov. 23, 1942, No. 16567. [Class 97 (ii)] Relates to an angle-measuring instrument particularly for use on aircraft for checking the 'accuracy of the compass and of the radio - direction finder. It comprises two co-planar mirrors Mt, Mh, one of which, Mt, is stationarily mounted on a base such as a bridge BP, Fig. 3, carried by a lid'L of a box, while the other, Mh, is rotatable on an axis coincident with the median line of the stationary mirror. As shown, the mirror Mh is carried by a bracket B from' a sleeve C<1> carried by the bridge BP, while the other mirror Mt is mounted on a spindle S<1>which is geared to a dial D, scale, cursor, or the like so that it indicates double the angle through which the mirror Mt is rotated. Datum marks Dh, Ds may be provided on the device. Fig. 1 shows the use of the device for checking the angle to the radio-direction bearing. With the aeroplane placed' in one position a mark or stake h is set out on the ground in the longitudinal axis of the plane; another stake is set out on the ground in the radio-beam. The device is turned as a whole until an image of the mark h is obtained in mirror Mh and mirror Mt is then rotated until the image of the stake t is obtained in the mirror Mt in alignment with' the image' of the mark h in the mirror Mh. In the example, the mirror will have been rotated through 140 degrees, the reading on the dial D being therefore 280 degrees, the complementary angle 80 degrees of which represents the bearing of the radio beam to the longitudinal axis of the plane. Fig. 5 shows a modification embodying a cursor DFC, a dial D and a second dial AS whereby both compass and radio beam bearings may be checked, the stationary mirror Mh in this case being below the rotatable mirror Mt, which mirrors show the images of the respective marks or stakes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1656742A GB561633A (en) | 1942-11-23 | 1942-11-23 | Device for measuring angles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1656742A GB561633A (en) | 1942-11-23 | 1942-11-23 | Device for measuring angles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB561633A true GB561633A (en) | 1944-05-26 |
Family
ID=10079641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1656742A Expired GB561633A (en) | 1942-11-23 | 1942-11-23 | Device for measuring angles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB561633A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2764054A (en) * | 1956-09-25 | Instruments for measuring angular differences | ||
| GB2198849A (en) * | 1986-12-13 | 1988-06-22 | John Dewar Mcallan | Navigation aid |
| CN109357601A (en) * | 2018-10-29 | 2019-02-19 | 中建三局集团有限公司 | A kind of bore angle measuring device |
-
1942
- 1942-11-23 GB GB1656742A patent/GB561633A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2764054A (en) * | 1956-09-25 | Instruments for measuring angular differences | ||
| GB2198849A (en) * | 1986-12-13 | 1988-06-22 | John Dewar Mcallan | Navigation aid |
| GB2198849B (en) * | 1986-12-13 | 1991-07-24 | John Dewar Mcallan | Navigation aid |
| CN109357601A (en) * | 2018-10-29 | 2019-02-19 | 中建三局集团有限公司 | A kind of bore angle measuring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB561633A (en) | Device for measuring angles | |
| US2337545A (en) | Star finder | |
| US686127A (en) | Surveyor's solar compass. | |
| GB957163A (en) | Improvements relating to apparatus for testing gyroscopes | |
| US2953060A (en) | Position finding device | |
| US3864015A (en) | Visual bearing instrument | |
| US2064917A (en) | Navigational instrument | |
| US765493A (en) | Reflection-measuring instrument. | |
| GB156033A (en) | Improvements in apparatus for use in solving problems in nautical astronomy or navigation | |
| Herrick | Instrumental solutions in celestial navigation | |
| US3082663A (en) | Multi-purpose magnetic pocket compass | |
| US510339A (en) | henderson | |
| US2715277A (en) | Two-vector navigational computer | |
| GB539257A (en) | Improved binnacle top for taking bearings | |
| GB130930A (en) | Improvements in or relating to Means or Apparatus suitable for use in Solving Problems in Nautical Astronomy, Navigation and Spherical Triangles. | |
| Scott | The evolution of mine-surveying instruments | |
| GB191422598A (en) | Improvements in or relating to Night-marching Compasses and the like. | |
| Wilson et al. | The Adjustment of the Optical Plummet of the Wild T2 | |
| GB1483839A (en) | Navigation instrument | |
| Steel | Advertisements | |
| GB494252A (en) | Calculating devices for navigating purposes | |
| Bennett | Theodolite orientation and defining the meridian in field astronomy | |
| GB191322499A (en) | An Improved Pocket Theodolite. | |
| GB387776A (en) | Apparatus for reading a divided circle | |
| GB190814008A (en) | An Astronomical Compass and Time Indicator. |