JPH01146995U - - Google Patents
Info
- Publication number
- JPH01146995U JPH01146995U JP4489088U JP4489088U JPH01146995U JP H01146995 U JPH01146995 U JP H01146995U JP 4489088 U JP4489088 U JP 4489088U JP 4489088 U JP4489088 U JP 4489088U JP H01146995 U JPH01146995 U JP H01146995U
- Authority
- JP
- Japan
- Prior art keywords
- circular hole
- ruler
- circle
- hole
- radius
- 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)
Description
第１図第２図は本案品の斜視図。第３図は本案
の使用を示す平面図である。
の使用を示す平面図である。
Claims (1)
- 透明にして板状をなす定規１の板部をくり抜い
て円孔２をつくり定規１の板面上に円孔２と同じ
半径の円３を画き円３の中心に小孔４をあけ円孔
２と異なる半径を有する第二の円孔５を設けた数
学用定規。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4489088U JPH01146995U (ja) | 1988-04-01 | 1988-04-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4489088U JPH01146995U (ja) | 1988-04-01 | 1988-04-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01146995U true JPH01146995U (ja) | 1989-10-11 |
Family
ID=31271225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4489088U Pending JPH01146995U (ja) | 1988-04-01 | 1988-04-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01146995U (ja) |
-
1988
- 1988-04-01 JP JP4489088U patent/JPH01146995U/ja active Pending