JPH0417987U - - Google Patents

Info

Publication number
JPH0417987U
JPH0417987U JP6002690U JP6002690U JPH0417987U JP H0417987 U JPH0417987 U JP H0417987U JP 6002690 U JP6002690 U JP 6002690U JP 6002690 U JP6002690 U JP 6002690U JP H0417987 U JPH0417987 U JP H0417987U
Authority
JP
Japan
Prior art keywords
ruler
slip
semicircular
scales
attach
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
JP6002690U
Other languages
English (en)
Japanese (ja)
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 JP6002690U priority Critical patent/JPH0417987U/ja
Publication of JPH0417987U publication Critical patent/JPH0417987U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Drawing Aids And Blackboards (AREA)
JP6002690U 1990-06-06 1990-06-06 Pending JPH0417987U (US20110009641A1-20110113-C00256.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6002690U JPH0417987U (US20110009641A1-20110113-C00256.png) 1990-06-06 1990-06-06

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6002690U JPH0417987U (US20110009641A1-20110113-C00256.png) 1990-06-06 1990-06-06

Publications (1)

Publication Number Publication Date
JPH0417987U true JPH0417987U (US20110009641A1-20110113-C00256.png) 1992-02-14

Family

ID=31587032

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6002690U Pending JPH0417987U (US20110009641A1-20110113-C00256.png) 1990-06-06 1990-06-06

Country Status (1)

Country Link
JP (1) JPH0417987U (US20110009641A1-20110113-C00256.png)

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