NL52574C - - Google Patents

Info

Publication number
NL52574C
NL52574C NL52574DA NL52574C NL 52574 C NL52574 C NL 52574C NL 52574D A NL52574D A NL 52574DA NL 52574 C NL52574 C NL 52574C
Authority
NL
Netherlands
Application number
Publication of NL52574C publication Critical patent/NL52574C/xx

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
    • 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)
NL52574D NL52574C (en)

Publications (1)

Publication Number Publication Date
NL52574C true NL52574C (en)

Family

ID=1810432

Family Applications (1)

Application Number Title Priority Date Filing Date
NL52574D NL52574C (en)

Country Status (1)

Country Link
NL (1) NL52574C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488605A (en) * 1948-02-04 1949-11-22 Jean E Progneaux Sundial
DE1296392B (en) * 1965-02-16 1969-05-29 Datawell Nv compass

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488605A (en) * 1948-02-04 1949-11-22 Jean E Progneaux Sundial
DE1296392B (en) * 1965-02-16 1969-05-29 Datawell Nv compass

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