GB532973A - Improvements in or relating to magnetic compasses - Google Patents

Improvements in or relating to magnetic compasses

Info

Publication number
GB532973A
GB532973A GB2595339A GB2595339A GB532973A GB 532973 A GB532973 A GB 532973A GB 2595339 A GB2595339 A GB 2595339A GB 2595339 A GB2595339 A GB 2595339A GB 532973 A GB532973 A GB 532973A
Authority
GB
United Kingdom
Prior art keywords
relating
magnetic compasses
magnet
compasses
magnetic
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
Application number
GB2595339A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kelvin Bottomley & Baird Ltd
Original Assignee
Kelvin Bottomley & Baird Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kelvin Bottomley & Baird Ltd filed Critical Kelvin Bottomley & Baird Ltd
Priority to GB2595339A priority Critical patent/GB532973A/en
Publication of GB532973A publication Critical patent/GB532973A/en
Expired legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Instructional Devices (AREA)

Abstract

532,973. Magnetic compasses. KELVIN, BOTTOMLEY & BAIRD, Ltd., and ARMSTRONG, L. A. Sept. 15, 1939, No. 25953. [Class 97 (ii)] The magnet-carrying structure is of moulded or pressed plastic material, with the magnet or the pivots or both embedded therein. Specification 416,241 is referred to.
GB2595339A 1939-09-15 1939-09-15 Improvements in or relating to magnetic compasses Expired GB532973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2595339A GB532973A (en) 1939-09-15 1939-09-15 Improvements in or relating to magnetic compasses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2595339A GB532973A (en) 1939-09-15 1939-09-15 Improvements in or relating to magnetic compasses

Publications (1)

Publication Number Publication Date
GB532973A true GB532973A (en) 1941-02-04

Family

ID=10235999

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2595339A Expired GB532973A (en) 1939-09-15 1939-09-15 Improvements in or relating to magnetic compasses

Country Status (1)

Country Link
GB (1) GB532973A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2529764A (en) * 1947-10-27 1950-11-14 Leon G Dufilho Magnetic compass
US2687577A (en) * 1952-09-03 1954-08-31 Francis P Pallotti Pocket compass
US3041917A (en) * 1959-09-24 1962-07-03 William L Macshane Underwater instrument viewing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2529764A (en) * 1947-10-27 1950-11-14 Leon G Dufilho Magnetic compass
US2687577A (en) * 1952-09-03 1954-08-31 Francis P Pallotti Pocket compass
US3041917A (en) * 1959-09-24 1962-07-03 William L Macshane Underwater instrument viewing device

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