DE239108C - - Google Patents

Info

Publication number
DE239108C
DE239108C DENDAT239108D DE239108DA DE239108C DE 239108 C DE239108 C DE 239108C DE NDAT239108 D DENDAT239108 D DE NDAT239108D DE 239108D A DE239108D A DE 239108DA DE 239108 C DE239108 C DE 239108C
Authority
DE
Germany
Prior art keywords
arc
measuring
frame
ruler
measuring wheel
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
DENDAT239108D
Other languages
German (de)
English (en)
Publication of DE239108C publication Critical patent/DE239108C/de
Active legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/02Magnetic compasses
    • G01C17/04Magnetic compasses with north-seeking magnetic elements, e.g. needles
    • G01C17/10Comparing observed direction with north indication
    • G01C17/12Comparing 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)
  • Length-Measuring Instruments Using Mechanical Means (AREA)
DENDAT239108D Active DE239108C (fr)

Publications (1)

Publication Number Publication Date
DE239108C true DE239108C (fr)

Family

ID=498579

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT239108D Active DE239108C (fr)

Country Status (1)

Country Link
DE (1) DE239108C (fr)

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