DE305438C - - Google Patents

Info

Publication number
DE305438C
DE305438C DENDAT305438D DE305438DA DE305438C DE 305438 C DE305438 C DE 305438C DE NDAT305438 D DENDAT305438 D DE NDAT305438D DE 305438D A DE305438D A DE 305438DA DE 305438 C DE305438 C DE 305438C
Authority
DE
Germany
Prior art keywords
pointer
needle
magnetic needle
line
sight
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.)
Active
Application number
DENDAT305438D
Other languages
German (de)
English (en)
Publication of DE305438C publication Critical patent/DE305438C/de
Active 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
    • G01C17/02—Magnetic compasses
    • G01C17/04—Magnetic compasses with north-seeking magnetic elements, e.g. needles
    • G01C17/10—Comparing observed direction with north indication
    • G01C17/12—Comparing observed direction with north indication by sighting means, e.g. for surveyors' compasses

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
DENDAT305438D Active DE305438C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
DE305438C true DE305438C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=558953

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT305438D Active DE305438C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
DE (1) DE305438C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2532974A (en) * 1944-10-31 1950-12-05 Bendix Aviat Corp Navigation system
US2561332A (en) * 1951-07-24 Course indicator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561332A (en) * 1951-07-24 Course indicator
US2532974A (en) * 1944-10-31 1950-12-05 Bendix Aviat Corp Navigation system

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