JPS6414097A - Shape universal ruler - Google Patents
Shape universal rulerInfo
- Publication number
- JPS6414097A JPS6414097A JP17039487A JP17039487A JPS6414097A JP S6414097 A JPS6414097 A JP S6414097A JP 17039487 A JP17039487 A JP 17039487A JP 17039487 A JP17039487 A JP 17039487A JP S6414097 A JPS6414097 A JP S6414097A
- Authority
- JP
- Japan
- Prior art keywords
- ruler
- short
- long
- scale
- center
- 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
Links
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
PURPOSE: To draw straight lines or triangles easily by combining long and short rectangular rulers with scale on their longer edges. CONSTITUTION: The ruler consists of long and short rectangular rulers with scale on their longer edges. A semicircular protractor with projected circular edge is formed on the almost center of the long ruler. A long slit is formed in the center of the short ruler along with the scale and several or more sharp arrow recesses are formed along the slit facing the scale. The short ruler is placed on the long ruler within the area of the latter. The point at the end of the scale on the central line of the short scale and the center of the protractor of the long ruler is matched to make a hole through the both rulers. They are supported, as they turn freely and fully around this axis. A line or arrow mark is written on the short ruler from the axis to the mark of 90 deg. when the short ruler is adjusted to make 90 deg. angle precisely between the short ruler and the long ruler using a triangle ruler.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17039487A JPS6414097A (en) | 1987-07-08 | 1987-07-08 | Shape universal ruler |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17039487A JPS6414097A (en) | 1987-07-08 | 1987-07-08 | Shape universal ruler |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6414097A true JPS6414097A (en) | 1989-01-18 |
Family
ID=15904114
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17039487A Pending JPS6414097A (en) | 1987-07-08 | 1987-07-08 | Shape universal ruler |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6414097A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005028112A (en) * | 2003-06-17 | 2005-02-03 | Richell Corp | Small article holder and eyelet for small article holder |
-
1987
- 1987-07-08 JP JP17039487A patent/JPS6414097A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005028112A (en) * | 2003-06-17 | 2005-02-03 | Richell Corp | Small article holder and eyelet for small article holder |
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