JPS57151813A - Compass for vehicle - Google Patents

Compass for vehicle

Info

Publication number
JPS57151813A
JPS57151813A JP3753581A JP3753581A JPS57151813A JP S57151813 A JPS57151813 A JP S57151813A JP 3753581 A JP3753581 A JP 3753581A JP 3753581 A JP3753581 A JP 3753581A JP S57151813 A JPS57151813 A JP S57151813A
Authority
JP
Japan
Prior art keywords
azimuth
compass
magnet
error
support shaft
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.)
Pending
Application number
JP3753581A
Other languages
Japanese (ja)
Inventor
Akira Honda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP3753581A priority Critical patent/JPS57151813A/en
Publication of JPS57151813A publication Critical patent/JPS57151813A/en
Pending 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
    • G01C17/20—Observing the compass card or needle

Abstract

PURPOSE:To decide an azimuth without any error, by placing a plane mirror under a compass having azimuth signs printed on an under surface thereof. CONSTITUTION:A plane mirror 5 is placed to a compass consisting of a support shaft 1, an azimuth magnet 2, a disc which has azimuth signs printed on an under surface thereof and turns around the support shaft 1 monolithicaly togehtewith the magnet 2, and an outer frame 5 to perform an observation from a visual point 6. The image of the compass, which directs an advancing cirection upward and in which a forward azimuth sign points to a positive azimuth facing a lateral direction, is obtained. This enables deciding of an azimuth without any error.
JP3753581A 1981-03-16 1981-03-16 Compass for vehicle Pending JPS57151813A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3753581A JPS57151813A (en) 1981-03-16 1981-03-16 Compass for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3753581A JPS57151813A (en) 1981-03-16 1981-03-16 Compass for vehicle

Publications (1)

Publication Number Publication Date
JPS57151813A true JPS57151813A (en) 1982-09-20

Family

ID=12500212

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3753581A Pending JPS57151813A (en) 1981-03-16 1981-03-16 Compass for vehicle

Country Status (1)

Country Link
JP (1) JPS57151813A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS518965A (en) * 1974-07-11 1976-01-24 Sakai Kyoko JIKIKONPASU

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS518965A (en) * 1974-07-11 1976-01-24 Sakai Kyoko JIKIKONPASU

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