JPH044969Y2 - - Google Patents

Info

Publication number
JPH044969Y2
JPH044969Y2 JP166185U JP166185U JPH044969Y2 JP H044969 Y2 JPH044969 Y2 JP H044969Y2 JP 166185 U JP166185 U JP 166185U JP 166185 U JP166185 U JP 166185U JP H044969 Y2 JPH044969 Y2 JP H044969Y2
Authority
JP
Japan
Prior art keywords
tunnel
light receiving
laser beam
receiving plate
photoelectric conversion
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.)
Expired
Application number
JP166185U
Other languages
English (en)
Japanese (ja)
Other versions
JPS61118012U (en]
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 filed Critical
Priority to JP166185U priority Critical patent/JPH044969Y2/ja
Publication of JPS61118012U publication Critical patent/JPS61118012U/ja
Application granted granted Critical
Publication of JPH044969Y2 publication Critical patent/JPH044969Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
JP166185U 1985-01-10 1985-01-10 Expired JPH044969Y2 (en])

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP166185U JPH044969Y2 (en]) 1985-01-10 1985-01-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP166185U JPH044969Y2 (en]) 1985-01-10 1985-01-10

Publications (2)

Publication Number Publication Date
JPS61118012U JPS61118012U (en]) 1986-07-25
JPH044969Y2 true JPH044969Y2 (en]) 1992-02-13

Family

ID=30474607

Family Applications (1)

Application Number Title Priority Date Filing Date
JP166185U Expired JPH044969Y2 (en]) 1985-01-10 1985-01-10

Country Status (1)

Country Link
JP (1) JPH044969Y2 (en])

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100466625B1 (ko) * 2002-12-09 2005-01-14 코오롱건설주식회사 탄성파 탐사의 수신기에 대한 송신원의 상대좌표 측정방법및 장치

Also Published As

Publication number Publication date
JPS61118012U (en]) 1986-07-25

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