JPS5796210A - Automatic elevation angle correction mechanism for theodolite - Google Patents

Automatic elevation angle correction mechanism for theodolite

Info

Publication number
JPS5796210A
JPS5796210A JP17168280A JP17168280A JPS5796210A JP S5796210 A JPS5796210 A JP S5796210A JP 17168280 A JP17168280 A JP 17168280A JP 17168280 A JP17168280 A JP 17168280A JP S5796210 A JPS5796210 A JP S5796210A
Authority
JP
Japan
Prior art keywords
scale
roof prism
point
elevation angle
theodolite
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.)
Granted
Application number
JP17168280A
Other languages
Japanese (ja)
Other versions
JPS5856807B2 (en
Inventor
Tadashi Iizuka
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.)
SOTSUKISHIYA KK
Sokkisha Co Ltd
Original Assignee
SOTSUKISHIYA KK
Sokkisha Co Ltd
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 SOTSUKISHIYA KK, Sokkisha Co Ltd filed Critical SOTSUKISHIYA KK
Priority to JP17168280A priority Critical patent/JPS5856807B2/en
Publication of JPS5796210A publication Critical patent/JPS5796210A/en
Publication of JPS5856807B2 publication Critical patent/JPS5856807B2/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Mounting And Adjusting Of Optical Elements (AREA)
  • Telescopes (AREA)

Abstract

PURPOSE:To correct elevation angle irrelevant to the inclination of the machine by vertically suspending a roof prism and the frame body thereof slightly separated from the elevation scale plate to ensure that the scale invariably exists on the axis of the optical system. CONSTITUTION:A roof prism 2 and a frame body thereof 2 are vertically suspended with a suspension line 4 at a suspension point 7, namely, one-half the radius R of the elevation division scale 5. As the machine tilts by alpha, the roof prism 2 deviates by alpha.R/2 horizontally and then, rests. At this point, the reflection surface of the roof prism covering scale images moves to the point 0' whereby the scale is automatically corrected to ensure that it invariably exists on the axis of the optical system.
JP17168280A 1980-12-05 1980-12-05 Theodolite altitude angle automatic correction mechanism Expired JPS5856807B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17168280A JPS5856807B2 (en) 1980-12-05 1980-12-05 Theodolite altitude angle automatic correction mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17168280A JPS5856807B2 (en) 1980-12-05 1980-12-05 Theodolite altitude angle automatic correction mechanism

Publications (2)

Publication Number Publication Date
JPS5796210A true JPS5796210A (en) 1982-06-15
JPS5856807B2 JPS5856807B2 (en) 1983-12-16

Family

ID=15927736

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17168280A Expired JPS5856807B2 (en) 1980-12-05 1980-12-05 Theodolite altitude angle automatic correction mechanism

Country Status (1)

Country Link
JP (1) JPS5856807B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60227111A (en) * 1984-04-25 1985-11-12 World Sokki:Kk Automatic correcting mechanism for altitude angle of theodolite

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60227111A (en) * 1984-04-25 1985-11-12 World Sokki:Kk Automatic correcting mechanism for altitude angle of theodolite

Also Published As

Publication number Publication date
JPS5856807B2 (en) 1983-12-16

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