JP3235660U - Scale enlargement ruler - Google Patents
Scale enlargement ruler Download PDFInfo
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- JP3235660U JP3235660U JP2021004198U JP2021004198U JP3235660U JP 3235660 U JP3235660 U JP 3235660U JP 2021004198 U JP2021004198 U JP 2021004198U JP 2021004198 U JP2021004198 U JP 2021004198U JP 3235660 U JP3235660 U JP 3235660U
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Abstract
【課題】平版上で線上の点を読み取ることにより倍率計算値を求めることができる縮小拡大定規を提供する。
【解決手段】平版Ａ上に等間隔に縦横の直行する線Ｂａ、Ｂｂを引き、この交点の一つを原点とし、基準線ｆａの交点と原点からの比例線Ｂｃにより縮小拡大率を読み取り出来るようにする。
【選択図】図１
PROBLEM TO BE SOLVED: To provide a reduction / enlargement ruler capable of obtaining a magnification calculation value by reading a point on a line on a planographic plate.
SOLUTION: Lines Ba and Bb which are orthogonal to each other at equal intervals are drawn on a planographic plate A, one of the intersections is set as an origin, and the reduction / enlargement ratio can be read by the intersection of the reference line fa and the proportional line Bc from the origin. To do so.
[Selection diagram] Fig. 1
Description
直行する縦横線と原点よりの比例線により縮小拡大率を求める定規に関するものである。It is related to a ruler that calculates the reduction / enlargement ratio by the vertical and horizontal lines that go straight and the proportional line from the origin.
図形等を縮小拡大するとき、直接寸法を測りこれの計算により縮小拡大率を求める方法が一般的である。
本考案は直接図形等に定規を合わせ読み取ることにより簡単にその倍率を求めることが出来るものである。When reducing or enlarging a figure or the like, it is common to directly measure the dimensions and calculate the enlargement / reduction ratio.
In the present invention, the magnification can be easily obtained by directly aligning a ruler with a figure or the like and reading it.
平面版に縦横各々等間隔なる直行する複数の平行線を引く、この平行線の交点の一つを原点とする。縦線の中間位置の横線を基準線とし、原点よりこの基準線の交点を通る比例線配してなることを特徴とする縮小拡大定規である。The origin is one of the intersections of these parallel lines, in which a plurality of orthogonal parallel lines are drawn on the flat plate at equal intervals in the vertical and horizontal directions. It is a reduction / enlargement ruler characterized in that a horizontal line at an intermediate position of a vertical line is used as a reference line and a proportional line is arranged from the origin through the intersection of the reference lines.
プラスチック等の平面版上に等間隔に直行する縦横線と原点よりの比例線を描画したものとなり、当該の図形等を目視しながら使用するため透明版とする必要がある。
またこの定規は原理的に掛け算、割り算を行っているものでありこれは書籍等に印刷して教材としても使えるものである。Vertical and horizontal lines perpendicular to equal intervals and proportional lines from the origin are drawn on a flat plate such as plastic, and it is necessary to make a transparent plate so that the figure or the like can be used while visually observing.
In principle, this ruler is multiplied and divided, and it can be printed on books and used as a teaching material.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021004198U JP3235660U (en) | 2021-10-05 | 2021-10-05 | Scale enlargement ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021004198U JP3235660U (en) | 2021-10-05 | 2021-10-05 | Scale enlargement ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3235660U true JP3235660U (en) | 2022-01-12 |
Family
ID=80081261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2021004198U Active JP3235660U (en) | 2021-10-05 | 2021-10-05 | Scale enlargement ruler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3235660U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5036646U (en) * | 1973-07-28 | 1975-04-17 | ||
| JPH0267901A (en) * | 1988-09-02 | 1990-03-07 | Masao Shimura | Ruler for reading reduction and magnification rate |
-
2021
- 2021-10-05 JP JP2021004198U patent/JP3235660U/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5036646U (en) * | 1973-07-28 | 1975-04-17 | ||
| JPH0267901A (en) * | 1988-09-02 | 1990-03-07 | Masao Shimura | Ruler for reading reduction and magnification rate |
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| Date | Code | Title | Description |
|---|---|---|---|
| R150 | Certificate of patent or registration of utility model |
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