CN105667138A - Serrated ruler - Google Patents
Serrated ruler Download PDFInfo
- Publication number
- CN105667138A CN105667138A CN201410658678.9A CN201410658678A CN105667138A CN 105667138 A CN105667138 A CN 105667138A CN 201410658678 A CN201410658678 A CN 201410658678A CN 105667138 A CN105667138 A CN 105667138A
- Authority
- CN
- China
- Prior art keywords
- ruler
- serrated
- degrees
- groove
- angles
- 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
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- Drawing Aids And Blackboards (AREA)
Abstract
The invention provides a serrated ruler. The serrated ruler is characterized in that grooves representing the commonly-used angles such as 30 degrees, 45 degrees and 60 degrees are formed in a ruler body; and during use, a user just needs to embed another ruler or a hard card into the corresponding groove. The serrated ruler has the beneficial effects of being simple in design, novel in structure and convenient to use, and providing the angles required by basic mathematical problems.
Description
Technical field
The present invention relates to a kind of office appliance field, specifically a kind of " sawtooth " chi.
Background technology
On mathematics class, we can use ruler and compasses to complete straight line very often, circular and weigh various angle. 30 °, 45 °, 60 °, 90 ° etc. is the angle that we commonly use, it does not have when compasses, what is to be done.
Summary of the invention
The present invention provides a kind of " sawtooth " chi, and it just can only use ruler just to draw conventional angle.
The technical solution adopted in the present invention is: it is provided with the groove of these common angles such as 30 °, 45 °, 60 ° on ruler, it may also be useful to time, it is only necessary to another ruler or cardboard are embedded in groove.
The invention has the beneficial effects as follows: simplicity of design, novel structure, the angle of basic mathematical topic demand can be tackled, it may also be useful to convenient.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is present configuration schematic diagram.
Embodiment
Shown in Fig. 1: it is provided with the groove 2 of these common angles such as 30 °, 45 °, 60 ° on the blade of ruler body 1, it may also be useful to time, it is only necessary to another ruler or cardboard are embedded in groove.
Claims (1)
1. " sawtooth " chi, is characterized in that: it is provided with the groove (2) of these common angles such as 30 °, 45 °, 60 ° on the blade of ruler body (1), it may also be useful to time, it is only necessary to another ruler or cardboard are embedded in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410658678.9A CN105667138A (en) | 2014-11-19 | 2014-11-19 | Serrated ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410658678.9A CN105667138A (en) | 2014-11-19 | 2014-11-19 | Serrated ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105667138A true CN105667138A (en) | 2016-06-15 |
Family
ID=56944253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410658678.9A Pending CN105667138A (en) | 2014-11-19 | 2014-11-19 | Serrated ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105667138A (en) |
-
2014
- 2014-11-19 CN CN201410658678.9A patent/CN105667138A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160615 |
|
| WD01 | Invention patent application deemed withdrawn after publication |