DE194477C - - Google Patents

Info

Publication number
DE194477C
DE194477C DENDAT194477D DE194477DA DE194477C DE 194477 C DE194477 C DE 194477C DE NDAT194477 D DENDAT194477 D DE NDAT194477D DE 194477D A DE194477D A DE 194477DA DE 194477 C DE194477 C DE 194477C
Authority
DE
Germany
Prior art keywords
magnetic needle
telescope
mark
setting
instrument
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
DENDAT194477D
Other languages
German (de)
English (en)
Publication of DE194477C publication Critical patent/DE194477C/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
    • G01C1/00—Measuring angles
    • 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)
  • Magnetic Resonance Imaging Apparatus (AREA)
DENDAT194477D Active DE194477C (OSRAM)

Publications (1)

Publication Number Publication Date
DE194477C true DE194477C (OSRAM)

Family

ID=457614

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT194477D Active DE194477C (OSRAM)

Country Status (1)

Country Link
DE (1) DE194477C (OSRAM)

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