FI882681A - Magneettikompassi - Google Patents

Magneettikompassi Download PDF

Info

Publication number
FI882681A
FI882681A FI882681A FI882681A FI882681A FI 882681 A FI882681 A FI 882681A FI 882681 A FI882681 A FI 882681A FI 882681 A FI882681 A FI 882681A FI 882681 A FI882681 A FI 882681A
Authority
FI
Finland
Prior art keywords
compass
dial
indicator needle
unit
line
Prior art date
Application number
FI882681A
Other languages
English (en)
Swedish (sv)
Other versions
FI97167B (fi
FI882681A0 (fi
FI97167C (fi
Inventor
Kenneth J Leblanc
Original Assignee
Rule Industries
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rule Industries filed Critical Rule Industries
Publication of FI882681A0 publication Critical patent/FI882681A0/fi
Publication of FI882681A publication Critical patent/FI882681A/fi
Publication of FI97167B publication Critical patent/FI97167B/fi
Application granted granted Critical
Publication of FI97167C publication Critical patent/FI97167C/fi

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
    • 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
    • G01C17/14—Comparing observed direction with north indication by reference marks, e.g. for ships' compasses

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Instructional Devices (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Credit Cards Or The Like (AREA)
FI882681A 1987-06-08 1988-06-07 Magneettikompassi FI97167C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5956787A 1987-06-08 1987-06-08
US5956787 1987-06-08

Publications (4)

Publication Number Publication Date
FI882681A0 FI882681A0 (fi) 1988-06-07
FI882681A true FI882681A (fi) 1988-12-09
FI97167B FI97167B (fi) 1996-07-15
FI97167C FI97167C (fi) 1996-10-25

Family

ID=22023809

Family Applications (1)

Application Number Title Priority Date Filing Date
FI882681A FI97167C (fi) 1987-06-08 1988-06-07 Magneettikompassi

Country Status (3)

Country Link
FI (1) FI97167C (fi)
IT (1) IT1219365B (fi)
SE (1) SE8802102L (fi)

Also Published As

Publication number Publication date
FI97167B (fi) 1996-07-15
SE8802102D0 (sv) 1988-06-06
FI882681A0 (fi) 1988-06-07
IT1219365B (it) 1990-05-11
FI97167C (fi) 1996-10-25
IT8867538A0 (it) 1988-06-08
SE8802102L (sv) 1988-12-09

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Legal Events

Date Code Title Description
BB Publication of examined application
MM Patent lapsed
MM Patent lapsed

Owner name: RULE INDUSTRIES, INC.