JPS57211006A - Measuring devce for horizontal angle - Google Patents

Measuring devce for horizontal angle

Info

Publication number
JPS57211006A
JPS57211006A JP9563581A JP9563581A JPS57211006A JP S57211006 A JPS57211006 A JP S57211006A JP 9563581 A JP9563581 A JP 9563581A JP 9563581 A JP9563581 A JP 9563581A JP S57211006 A JPS57211006 A JP S57211006A
Authority
JP
Japan
Prior art keywords
measured
measuring
needle
devce
horizontal angle
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
JP9563581A
Other languages
Japanese (ja)
Inventor
Koichi Murata
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 JP9563581A priority Critical patent/JPS57211006A/en
Publication of JPS57211006A publication Critical patent/JPS57211006A/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
    • G01C17/10—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)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

PURPOSE:To measure the differences in angles of plural surfaces in a horizontal direction from the mutual relations between measuring surfaces and a magnetic needle. CONSTITUTION:A measuring surface 9 is placed on a surface to be measured which is used as a reference. When the direction of a magnetic needle 3 is determined, an angle scale plate 5 is turned by a handle 8 to match a reference line 7 at both ends of the needle 3. These are moved from the surface to be measured and to be used as a reference to the other surface to be measured for which an angle difference is going to be measured, and the reference surface 9 is placed thereon. When the direction of the needle 3 is determined, the differences in the angles of the plural surface in the horizontal direction are measured from the reading of the angle scale 6 of the angle scale plate 5 to which both ends of the needle 3 indicate.
JP9563581A 1981-06-20 1981-06-20 Measuring devce for horizontal angle Pending JPS57211006A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9563581A JPS57211006A (en) 1981-06-20 1981-06-20 Measuring devce for horizontal angle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9563581A JPS57211006A (en) 1981-06-20 1981-06-20 Measuring devce for horizontal angle

Publications (1)

Publication Number Publication Date
JPS57211006A true JPS57211006A (en) 1982-12-24

Family

ID=14142969

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9563581A Pending JPS57211006A (en) 1981-06-20 1981-06-20 Measuring devce for horizontal angle

Country Status (1)

Country Link
JP (1) JPS57211006A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013160696A (en) * 2012-02-07 2013-08-19 Vixen Co Ltd Adjuster for celestial observation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013160696A (en) * 2012-02-07 2013-08-19 Vixen Co Ltd Adjuster for celestial observation

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