GB582691A - Improvements in or relating to magnetic compasses - Google Patents

Improvements in or relating to magnetic compasses

Info

Publication number
GB582691A
GB582691A GB1724244A GB1724244A GB582691A GB 582691 A GB582691 A GB 582691A GB 1724244 A GB1724244 A GB 1724244A GB 1724244 A GB1724244 A GB 1724244A GB 582691 A GB582691 A GB 582691A
Authority
GB
United Kingdom
Prior art keywords
magnetic compasses
relating
cover
moulded
airbubble
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
GB1724244A
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.)
NEILL JAMES & CO SHEFFIELD Ltd
James Neill and Co Ltd Sheffield
Original Assignee
NEILL JAMES & CO SHEFFIELD Ltd
James Neill and Co Ltd Sheffield
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 NEILL JAMES & CO SHEFFIELD Ltd, James Neill and Co Ltd Sheffield filed Critical NEILL JAMES & CO SHEFFIELD Ltd
Priority to GB1724244A priority Critical patent/GB582691A/en
Publication of GB582691A publication Critical patent/GB582691A/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)
  • Level Indicators Using A Float (AREA)

Abstract

582,691. Magnetic compasses. NEILL & CO. (SHEFFIELD), Ltd., J., and EDWARDS, A. Sept. 9, 1944, No. 17242. [Class 97 (ii)] A liquid-filled compass has a moulded thermoplastic case 1, 2, the cover 1 being transparent and cup-shaped to retain an airbubble 13 which can serve as a levelling indicator or can be displaced and trapped by a depending rim 15. A lens 17 can be moulded in the cover and also scales of degrees or other indicia.
GB1724244A 1944-09-09 1944-09-09 Improvements in or relating to magnetic compasses Expired GB582691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1724244A GB582691A (en) 1944-09-09 1944-09-09 Improvements in or relating to magnetic compasses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1724244A GB582691A (en) 1944-09-09 1944-09-09 Improvements in or relating to magnetic compasses

Publications (1)

Publication Number Publication Date
GB582691A true GB582691A (en) 1946-11-25

Family

ID=10091760

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1724244A Expired GB582691A (en) 1944-09-09 1944-09-09 Improvements in or relating to magnetic compasses

Country Status (1)

Country Link
GB (1) GB582691A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2594600A (en) * 1950-02-02 1952-04-29 Berke Brothers Distilleries In Sundial and compass
US2636283A (en) * 1951-03-06 1953-04-28 I D Watch Case Co Inc Compass crystal for watches
US2903798A (en) * 1956-03-05 1959-09-15 Airguide Instr Company Magnetic compass
US3497963A (en) * 1967-05-15 1970-03-03 Walter G Von Meyer Compass
GB2281124A (en) * 1993-08-18 1995-02-22 Simon Hsu Wrist-mounted magnetic compass
WO2009027566A1 (en) * 2007-08-09 2009-03-05 Universidad Del Pais Vasco-Euskal Herriko Unibertsitatea Integral magnetic compass for establishing deviations in real time

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2594600A (en) * 1950-02-02 1952-04-29 Berke Brothers Distilleries In Sundial and compass
US2636283A (en) * 1951-03-06 1953-04-28 I D Watch Case Co Inc Compass crystal for watches
US2903798A (en) * 1956-03-05 1959-09-15 Airguide Instr Company Magnetic compass
US3497963A (en) * 1967-05-15 1970-03-03 Walter G Von Meyer Compass
GB2281124A (en) * 1993-08-18 1995-02-22 Simon Hsu Wrist-mounted magnetic compass
GB2281124B (en) * 1993-08-18 1996-07-10 Simon Hsu Directional indicator
WO2009027566A1 (en) * 2007-08-09 2009-03-05 Universidad Del Pais Vasco-Euskal Herriko Unibertsitatea Integral magnetic compass for establishing deviations in real time
ES2339312A1 (en) * 2007-08-09 2010-05-18 Universidad Del Pais Vasco - Euskal Herriko Unibersitatea Integral magnetic compass for establishing deviations in real time
EP2187167A1 (en) * 2007-08-09 2010-05-19 Universidad Del Pais Vasco - Euskal Herriko Unibertsitatea Integral magnetic compass for establishing deviations in real time
EP2187167A4 (en) * 2007-08-09 2011-12-21 Univ Pais Vasco Integral magnetic compass for establishing deviations in real time
US8510965B2 (en) 2007-08-09 2013-08-20 Universidad Del Pais Vasco-Euskal Herriko Unibertsitatea Integral magnetic compass for establishing deviations in real time

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