DE287169C - - Google Patents

Info

Publication number
DE287169C
DE287169C DENDAT287169D DE287169DA DE287169C DE 287169 C DE287169 C DE 287169C DE NDAT287169 D DENDAT287169 D DE NDAT287169D DE 287169D A DE287169D A DE 287169DA DE 287169 C DE287169 C DE 287169C
Authority
DE
Germany
Prior art keywords
diopter
ruler
instrument
telescope
horizontal
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
DENDAT287169D
Other languages
German (de)
English (en)
Publication of DE287169C publication Critical patent/DE287169C/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
    • G01C17/16—Comparing observed direction with north indication by clinometers, e.g. for determining dip or strike of geological strata
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C1/00—Measuring angles
    • G01C1/02—Theodolites
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
    • H01Q7/08—Ferrite rod or like elongated core

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
DENDAT287169D Active DE287169C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE287169C true DE287169C (enrdf_load_stackoverflow)

Family

ID=542413

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT287169D Active DE287169C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE287169C (enrdf_load_stackoverflow)

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