DE213304C - - Google Patents

Info

Publication number
DE213304C
DE213304C DENDAT213304D DE213304DA DE213304C DE 213304 C DE213304 C DE 213304C DE NDAT213304 D DENDAT213304 D DE NDAT213304D DE 213304D A DE213304D A DE 213304DA DE 213304 C DE213304 C DE 213304C
Authority
DE
Germany
Prior art keywords
angle
sights
instrument
horizontal
same time
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
DENDAT213304D
Other languages
German (de)
English (en)
Publication of DE213304C publication Critical patent/DE213304C/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)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Eye Examination Apparatus (AREA)
DENDAT213304D Active DE213304C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE213304C true DE213304C (enrdf_load_stackoverflow)

Family

ID=474966

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT213304D Active DE213304C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE213304C (enrdf_load_stackoverflow)

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