CN105291654A - Folding-type multifunctional measuring scale - Google Patents
Folding-type multifunctional measuring scale Download PDFInfo
- Publication number
- CN105291654A CN105291654A CN201510868008.4A CN201510868008A CN105291654A CN 105291654 A CN105291654 A CN 105291654A CN 201510868008 A CN201510868008 A CN 201510868008A CN 105291654 A CN105291654 A CN 105291654A
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- CN
- China
- Prior art keywords
- connecting portion
- auxiliary scale
- scale body
- rotating shaft
- middle chi
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L7/00—Straightedges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L7/00—Straightedges
- B43L7/10—Plural straightedges relatively movable
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- Drawing Aids And Blackboards (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention discloses a folding-type multifunctional measuring scale. The folding-type multifunctional measuring scale comprises a middle scale body, a first auxiliary scale body and a second auxiliary scale body, wherein a first end of the middle scale body is sunken to form a first connection part, and a second end of the middle scale body is sunken to form a second connection part; an end part of the first auxiliary scale body is sunken to form a third connection part matched with the first connection part, the first connection part is pivotedly connected with the third connection part through a first rotary shaft, and the first connection part and the third connection part oppositely move along the first rotary shaft when the middle scale body and the first auxiliary scale body are folded; an end part of the second auxiliary scale body is sunken to form a fourth connection part matched with the second connection part, the second connection part is pivotedly connected with the fourth connection part through a second rotary shaft, and the second connection part and the fourth connection part oppositely move along the second rotary shaft when the middle scale body and the second auxiliary scale body are folded; and length scales and angle scales are formed on at least the middle scale body. The folding-type multifunctional measuring scale disclosed by the invention enables the surfaces of the middle scale body, the first auxiliary scale body and the second auxiliary scale body to be level while being unfolded; and the folding-type multifunctional measuring scale has good marking and measuring effects.
Description
Technical field
The present invention relates to a kind of folding utility gage.
Background technology
In daily life study, often can use the multiple chi tools such as ruler, protractor and set square, chi tool kind is more, but function singleness, use very inconvenient, be also not easy to carry.
Although current folding ruler on the market solves portable problem, because chi body has thickness, when folding, surface does not flush, and have impact on the effect of line and tolerance.
Summary of the invention
Technical problem to be solved by this invention is to provide and a kind ofly makes folding utility gage simple, easy to use, can work as ruler, set square use, also energy equivalent hornwork use, and when launching, surface flushes, and does not collide each other time folding.
For realizing above-mentioned technique effect, the invention discloses a kind of folding utility gage, comprising:
Middle chi body, the first end of described middle chi body is recessed to form the first connecting portion, and the second concave end of described middle chi body forms the second connecting portion;
First auxiliary scale body, end is recessed to form the 3rd connecting portion matched with described first connecting portion, by the first rotating shaft pivot joint between described first connecting portion and described 3rd connecting portion, and the first connecting portion described in when described middle chi body and described first auxiliary scale folded body and described 3rd connecting portion do along described first rotating shaft and move dorsad;
Second auxiliary scale body, end is recessed to form the 4th connecting portion matched with described second connecting portion, by the second rotating shaft pivot joint between described second connecting portion and described 4th connecting portion, and the second connecting portion described in when described middle chi body and described second auxiliary scale folded body and described 4th connecting portion do along described second rotating shaft and move dorsad;
At least described middle chi body is provided with length scale and angle index.
The present invention further improves and is, described first rotating shaft is that threaded first thread spindle is established on surface, and described first connecting portion and described 3rd connecting portion are provided with the first screwed hole be screwed with described first thread spindle;
Described second rotating shaft is that threaded second thread spindle is established on surface, and described second connecting portion and described 4th connecting portion are provided with the second screwed hole be screwed with described second thread spindle.
The present invention further improves and is, the side that described first connecting portion closes on mutually with described 3rd connecting portion is provided with the first magnet;
The side that described second connecting portion closes on mutually with described 4th connecting portion is provided with the second magnet.
The present invention further improves and is, described first rotating shaft runs through described first connecting portion and described 3rd connecting portion, and the two ends of described first rotating shaft are provided with the first limiting plate;
Described second rotating shaft runs through described second connecting portion and described 4th connecting portion, and the two ends of described second rotating shaft are provided with the second limiting plate.
The present invention further improves and is, the first end of described first auxiliary scale body and the first end pivot joint of described middle chi body, and the second end of described first auxiliary scale body is provided with mobile salient point, and the surface of the second auxiliary scale body is provided with the guide groove for described mobile salient point slippage.
The present invention further improves and is, the first end of described second auxiliary scale body and the second end pivot joint of described middle chi body, and described guide groove is opened in the second end of described second auxiliary scale body and the first end direction to described second auxiliary scale body extends.
The present invention further improves and is, described angle index is located at the side that described middle chi body closes on described first auxiliary scale body.
The present invention further improves and is, described first connecting portion is provided with protractor, and described angle index is located on described protractor; Described 3rd connecting portion is provided with pointed pointer, and described first rotating shaft is connected between described pointed pointer and the center of circle of described protractor.
The present invention, owing to have employed above technical scheme, makes it have following beneficial effect:
Chi body and be articulated in the first auxiliary scale body at middle chi body two ends and the combination of the second auxiliary scale body forms Multifunctional measuring scale in the middle of utilizing, when middle chi body, the first auxiliary scale body, the second auxiliary scale body all launch, can use as ruler; Can use as set square again after folding, middle chi body is provided with angle index, and can use as protractor again after coordinating with the first auxiliary scale body and the second auxiliary scale body, a chi is multiplex, easy to use, is easy to carry;
By being recessed to form the first connecting portion and the second connecting portion at the two ends of middle chi body, the 3rd connecting portion and the 4th connecting portion is recessed to form in the end of the first auxiliary scale body and the second auxiliary scale body, middle chi body, the first auxiliary scale body and the second auxiliary scale body can be made to flush on surface upon deployment, line and tolerance effect better; Again by make the first connecting portion and the 3rd connecting portion, the second connecting portion and the 4th connecting portion when folding mutually away from, can prevent from mutually colliding when middle chi body, the first auxiliary scale body and the second auxiliary scale folded body;
By arranging mobile salient point on the first auxiliary scale body, the second auxiliary scale body arranging the guide groove for mobile salient point slippage, the first auxiliary scale body can be made to move along guide groove, be convenient to control amount of movement, it is more convenient, accurate to measure;
Accompanying drawing explanation
Fig. 1 is the planar structure schematic diagram of the first embodiment of a kind of folding utility gage of the present invention.
Cross-sectional view when Fig. 2 is the first embodiment expansion of a kind of folding utility gage of the present invention.
Fig. 3 is the decomposition texture schematic diagram of Fig. 2.
Cross-sectional view when Fig. 4 is middle chi body and the first auxiliary scale folded body of the first embodiment of a kind of folding utility of the present invention gage.
Cross-sectional view when Fig. 5 is the second embodiment expansion of a kind of folding utility gage of the present invention.
Fig. 6 is the decomposition texture schematic diagram of Fig. 5.
Cross-sectional view when Fig. 7 is middle chi body and the first auxiliary scale folded body of the second embodiment of a kind of folding utility of the present invention gage.
Fig. 8 is the planar structure schematic diagram of the third embodiment of a kind of folding utility gage of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and the specific embodiments, the present invention is further detailed explanation.
First consult shown in Fig. 1 ~ 3, a kind of folding utility of the present invention gage forms primarily of the second auxiliary scale body 12 of middle chi body 10, the first auxiliary scale body 11 being articulated in the first end 101 of middle chi body 10 and the second end 102 of being articulated in middle chi body 10, and at least on middle chi body 10, be provided with length scale 13 and angle index 14, when middle chi body 10, first auxiliary scale body 11, second auxiliary scale body 12 all launches, can use as ruler; Can use as set square again after folding, can use as protractor again after the angle index 14 that middle chi body 10 is arranged coordinates with the first auxiliary scale body 11 and the second auxiliary scale body 12, a chi is multiplex, easy to use and be easy to carry.
The first end 101 of middle chi body 10 is recessed to form the first connecting portion 151 to the side away from the first auxiliary scale body 11, and the second end 102 of middle chi body 10 is recessed to form the second connecting portion 152 to the side away from the second auxiliary scale body 12; The end of the first auxiliary scale body 11 is recessed to form the 3rd connecting portion 153 to the side away from middle chi body 10, and the first connecting portion 151 can match with the 3rd connecting portion 153, middle chi body 10 with make middle chi body 10 and the first auxiliary scale body 11 surface during the first relative expansion of auxiliary scale body 11 and flush; The end of the second auxiliary scale body 12 is recessed to form the 4th connecting portion 154 to the side away from middle chi body 10, and the second connecting portion 152 can match with the 4th connecting portion 154, middle chi body 10 with make middle chi body 10 and the second auxiliary scale body 12 surface during the second relative expansion of auxiliary scale body 12 and flush; Thus guarantee straight degree and the degree of accuracy of line and tolerance.
Further, by the first rotating shaft 161 pivot joint between first connecting portion 151 of middle chi body 10 and the 3rd connecting portion 153 of the first auxiliary scale body 11 end, by rotating around the first rotating shaft 161 to realize launching and folding, and, when middle chi body 10 and the first auxiliary scale body 11 fold, the first connecting portion 151 and the 3rd connecting portion 153 can do along the first rotating shaft 161 and move dorsad, namely relative away from, avoid middle chi body 10 and the first auxiliary scale body 11 mutually to collide when folding.
By the second rotating shaft 162 pivot joint between second connecting portion 152 of middle chi body 10 and the 4th connecting portion 154 of the second auxiliary scale body 12 end, by rotating around the second rotating shaft 162 to realize launching and folding, and, when middle chi body 10 and the second auxiliary scale body 12 fold, the second connecting portion 152 and the 4th connecting portion 154 can do along the second rotating shaft 162 and move dorsad, namely relative away from, avoid middle chi body 10 and the second auxiliary scale body 12 mutually to collide when folding.
List two kinds of articulated manner of folding utility gage of the present invention below, specific as follows:
Embodiment 1:
Consult shown in Fig. 2 and Fig. 3, the first rotating shaft 161 is for establishing threaded first thread spindle in surface, and the first connecting portion 151 of middle chi body 10 and the 3rd connecting portion 153 of the first auxiliary scale body 11 are provided with the first screwed hole 171 be screwed with this first thread spindle.
Middle chi body 10 is relative with the first auxiliary scale body 11 when launching, the first screwed hole 171 on first connecting portion 151 is screwed together in the upper half of the first thread spindle, the first screwed hole 171 on 3rd connecting portion 153 is screwed together in the lower half of the first thread spindle, the lower surface of the first connecting portion 151 and the upper surface of the second connecting portion 152 are fitted, and middle chi body 10 and the first auxiliary scale body 11 surface flush.
Coordinate shown in Fig. 4, when folding middle chi body 10 and the first auxiliary scale body 11, the first connecting portion 151 being positioned at top rotates around the first thread spindle and moves upward, be positioned at below the 3rd connecting portion 153 rotate around the first thread spindle and move downward, first connecting portion 151 and the 3rd connecting portion 153 are done in folding process move dorsad, finally, as shown in Figure 4, the lower surface of middle chi body 10 is folded to fits with the upper surface of the first auxiliary scale body 11, realize completely folding, now, the first screwed hole 171 on first connecting portion 151 is screwed together in the upper end of the first thread spindle, the first screwed hole 171 on 3rd connecting portion 153 is screwed together in the lower end of the first thread spindle, but all do not depart from the first thread spindle.
Same, the second rotating shaft 162 is for establishing threaded second thread spindle in surface, and the second connecting portion 152 of middle chi body 10 and the 4th connecting portion 154 of the second auxiliary scale body 12 are provided with the second screwed hole 172 be screwed with this second thread spindle.
Middle chi body 10 is relative with the second auxiliary scale body 12 when launching, the second screwed hole 172 on second connecting portion 152 is screwed together in the upper half of the second thread spindle, the second screwed hole 172 on 4th connecting portion 154 is screwed together in the lower half of the second thread spindle, the lower surface of the second connecting portion 152 and the upper surface of the 4th connecting portion 154 are fitted, and middle chi body 10 and the second auxiliary scale body 12 surface flush.
When folding middle chi body and the second auxiliary scale body (can see structure when middle chi body and the first auxiliary scale folded body), the second connecting portion being positioned at top rotates around the second thread spindle and moves upward, be positioned at below the 3rd connecting portion then rotate around the second thread spindle and move downward, second connecting portion and the 4th connecting portion are done in folding process move dorsad, finally, the lower surface of middle chi body is folded to fits with the upper surface of the second auxiliary scale body, realize completely folding, now, the second screwed hole on second connecting portion is screwed together in the upper end of the second thread spindle, the second screwed hole on 4th connecting portion is screwed together in the lower end of the second thread spindle, but all do not depart from the second thread spindle.
Embodiment 2:
Consult shown in Fig. 5 and Fig. 6, first connecting portion 151 of middle chi body 10 is provided with the first magnet 181 with the side that the 3rd connecting portion 153 of the first auxiliary scale body 11 closes on mutually, first rotating shaft 161 runs through the first connecting portion 151 and the 3rd connecting portion 15, and the two ends of the first rotating shaft 161 be provided with the first limiting plate 191, first rotating shaft 161 two ends the first limiting plate 191 between spacing be not less than thickness when middle chi body 10 and the first auxiliary scale body 11 superpose.Magnetic the first connecting portion 151 and the 3rd connecting portion 153 can be connected by the first magnet 181 be arranged on side that the first connecting portion 151 and the 3rd connecting portion 153 close on mutually.
Middle chi body 10 is relative with the first auxiliary scale body 11 when launching, and the lower surface of the first connecting portion 151 and the upper surface of the 3rd connecting portion 153 are fitted by the first magnet 181, and middle chi body 10 and the first auxiliary scale body 11 surface flush.
Coordinate shown in Fig. 7, when folding middle chi body 10 and the first auxiliary scale body 11, staff upwards pulls the first connecting portion 151 being positioned at top, pulls downwards and is positioned at below the 3rd connecting portion 153, the first connecting portion 151 and the 3rd connecting portion 153 are done along the first rotating shaft 161 and moves dorsad, fold after putting in place, decontrol the first connecting portion 151 and the 3rd connecting portion 153, as shown in Figure 6, now, the lower surface of middle chi body 10 is folded to fits with the upper surface of the first auxiliary scale body 11, realizes completely folding.
Same, second connecting portion 152 of middle chi body 10 is provided with the second magnet 182 with the side that the 4th connecting portion 154 of the second auxiliary scale body 12 closes on mutually, second rotating shaft 162 runs through the second connecting portion 152 and the 4th connecting portion 154, and the two ends of the second rotating shaft 162 be provided with the second limiting plate 192, second rotating shaft 162 two ends the second limiting plate 192 between spacing be not less than thickness when middle chi body 10 and the second auxiliary scale body 12 superpose.Magnetic the second connecting portion 152 and the second connecting portion 152 can be connected by the second magnet 182 be arranged on side that the second connecting portion 152 and the 4th connecting portion 154 close on mutually.
Middle chi body 10 is relative with the second auxiliary scale body 12 when launching, and the lower surface of the second connecting portion 152 and the upper surface of the second connecting portion 152 are fitted by the second magnet 182, and middle chi body 10 and the second auxiliary scale body 12 surface flush.
When folding middle chi body and the second auxiliary scale body (can see structure when middle chi body and the first auxiliary scale folded body), staff upwards pulls the second connecting portion being positioned at top, pull downwards and be positioned at below the 4th connecting portion, second connecting portion and the 4th connecting portion are done along the second rotating shaft move dorsad, fold after putting in place, decontrol the second connecting portion and the 4th connecting portion, now, the lower surface of middle chi body is folded to fits with the upper surface of the second auxiliary scale body, realizes completely folding.
As better embodiment of the present invention, the first end 111 of the first auxiliary scale body 11 and first end 101 pivot joint of middle chi body 10, the surface that second end 111 of the first auxiliary scale body 11 is provided with mobile salient point 20, second auxiliary scale body 12 is provided with moves the guide groove 21 of salient point 20 slippage for this.Be slidedly arranged on guide groove 21 by mobile salient point 20, the triangle of various different angles can be folded out.Further, the first end 121 of the second auxiliary scale body 12 and the second end 102 pivot joint of middle chi body 10, guide groove 21 is opened in the second end 122 of the second auxiliary scale body 12 and first end 121 direction to the second auxiliary scale body 12 extends, and makes the second end 112 of the first auxiliary scale body 11 to enter in guide groove 21 from the second end 122 of the second auxiliary scale body 12 and to move along guide groove 21 to first end 121 direction of the second auxiliary scale body 12.
Consult shown in Fig. 1, angle index 14 can be located at the side that middle chi body 10 closes on the first auxiliary scale body 11.In use, by the angle index 14 of chi body 10 sidepiece in the middle of the laminating of the sidepiece of the first auxiliary scale body 11, the scale value of respective angles scale 14 is exactly the angle number of degrees now between the first auxiliary scale body 11 and middle chi body 10.
Same, the side also can closing on the second auxiliary scale body in middle chi body arranges angle index, makes to have the effect taken measurement of an angle between the second auxiliary scale body and middle chi body.
Or, consult shown in Fig. 8, can also adopt and draw protractor 22 on the first connecting portion 151 of middle chi body 10 first end, angle index is plotted on protractor 22,3rd connecting portion 153 arranges pointed pointer 23, and the first rotating shaft 161 is connected between pointed pointer 23 and the center of circle of protractor 22.When middle chi body 10 and the first auxiliary scale body 11 rotate around the first rotating shaft 161, the angle index of pointed pointer 23 indication on protractor 22 on the 3rd connecting portion 153 is exactly the number of degrees of the middle chi body 10 of pivot joint and the angle of the first auxiliary scale body 11, thus realizes the function of protractor.
Same, also can obtain the second connecting portion draws protractor at middle chi body second end, on the 4th connecting portion of the second auxiliary scale body, draw the pointed pointer that to match with this protractor accordingly; Or on first connecting portion and the second connecting portion of middle chi body, draw protractor respectively, corresponding on the 3rd connecting portion of the first auxiliary scale body and the 4th connecting portion of the second auxiliary scale body, draw the pointed pointer that to match with protractor respectively, the function of protractor can be realized equally.
Folding utility gage of the present invention utilizes middle chi body and is articulated in the first auxiliary scale body and the second auxiliary scale body combination formation Multifunctional measuring scale at middle chi body two ends, when middle chi body, the first auxiliary scale body, the second auxiliary scale body all launch, can use as ruler; Can use as set square again after folding, middle chi body is provided with angle index, and can use as protractor again after coordinating with the first auxiliary scale body and the second auxiliary scale body, a chi is multiplex, easy to use, is easy to carry; By being recessed to form the first connecting portion and the second connecting portion at the two ends of middle chi body, the 3rd connecting portion and the 4th connecting portion is recessed to form in the end of the first auxiliary scale body and the second auxiliary scale body, middle chi body, the first auxiliary scale body and the second auxiliary scale body can be made to flush on surface upon deployment, line and tolerance effect better; Again by make the first connecting portion and the 3rd connecting portion, the second connecting portion and the 4th connecting portion when folding mutually away from, can prevent from mutually colliding when middle chi body, the first auxiliary scale body and the second auxiliary scale folded body; By arranging mobile salient point on the first auxiliary scale body, the second auxiliary scale body arranging the guide groove for mobile salient point slippage, the first auxiliary scale body can be made to move along guide groove, be convenient to control amount of movement, it is more convenient, accurate to measure.
Below by reference to the accompanying drawings and embodiment to invention has been detailed description, those skilled in the art can make many variations example to the present invention according to the above description.Thus, some details in embodiment should not form limitation of the invention, the present invention by the scope that defines using appended claims as protection scope of the present invention.
Claims (8)
1. a folding utility gage, is characterized in that, comprising:
Middle chi body, the first end of described middle chi body is recessed to form the first connecting portion, and the second concave end of described middle chi body forms the second connecting portion;
First auxiliary scale body, end is recessed to form the 3rd connecting portion matched with described first connecting portion, by the first rotating shaft pivot joint between described first connecting portion and described 3rd connecting portion, and the first connecting portion described in when described middle chi body and described first auxiliary scale folded body and described 3rd connecting portion do along described first rotating shaft and move dorsad;
Second auxiliary scale body, end is recessed to form the 4th connecting portion matched with described second connecting portion, by the second rotating shaft pivot joint between described second connecting portion and described 4th connecting portion, and the second connecting portion described in when described middle chi body and described second auxiliary scale folded body and described 4th connecting portion do along described second rotating shaft and move dorsad;
At least described middle chi body is provided with length scale and angle index.
2. folding utility gage as claimed in claim 1, is characterized in that:
Described first rotating shaft is that threaded first thread spindle is established on surface, and described first connecting portion and described 3rd connecting portion are provided with the first screwed hole be screwed with described first thread spindle;
Described second rotating shaft is that threaded second thread spindle is established on surface, and described second connecting portion and described 4th connecting portion are provided with the second screwed hole be screwed with described second thread spindle.
3. folding utility gage as claimed in claim 2, is characterized in that:
The side that described first connecting portion closes on mutually with described 3rd connecting portion is provided with the first magnet;
The side that described second connecting portion closes on mutually with described 4th connecting portion is provided with the second magnet.
4. folding utility gage as claimed in claim 3, is characterized in that:
Described first rotating shaft runs through described first connecting portion and described 3rd connecting portion, and the two ends of described first rotating shaft are provided with the first limiting plate;
Described second rotating shaft runs through described second connecting portion and described 4th connecting portion, and the two ends of described second rotating shaft are provided with the second limiting plate.
5. folding utility gage as claimed in claim 1, it is characterized in that: the first end of described first auxiliary scale body and the first end pivot joint of described middle chi body, second end of described first auxiliary scale body is provided with mobile salient point, and the surface of the second auxiliary scale body is provided with the guide groove for described mobile salient point slippage.
6. folding utility gage as claimed in claim 5, it is characterized in that: the first end of described second auxiliary scale body and the second end pivot joint of described middle chi body, described guide groove is opened in the second end of described second auxiliary scale body and the first end direction to described second auxiliary scale body extends.
7. folding utility gage as claimed in claim 5, is characterized in that: described angle index is located at the side that described middle chi body closes on described first auxiliary scale body.
8. folding utility gage as claimed in claim 5, it is characterized in that: described first connecting portion is provided with protractor, described angle index is located on described protractor; Described 3rd connecting portion is provided with pointed pointer, and described first rotating shaft is connected between described pointed pointer and the center of circle of described protractor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510868008.4A CN105291654A (en) | 2015-12-01 | 2015-12-01 | Folding-type multifunctional measuring scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510868008.4A CN105291654A (en) | 2015-12-01 | 2015-12-01 | Folding-type multifunctional measuring scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105291654A true CN105291654A (en) | 2016-02-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510868008.4A Pending CN105291654A (en) | 2015-12-01 | 2015-12-01 | Folding-type multifunctional measuring scale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105291654A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108674065A (en) * | 2018-06-21 | 2018-10-19 | 江西工业工程职业技术学院 | The multi-purpose measuring scale of artistic decoration design specialized |
| CN111421985A (en) * | 2020-04-24 | 2020-07-17 | 商丘师范学院 | Tool for economic management drawing |
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| CN201092205Y (en) * | 2007-09-05 | 2008-07-30 | 牛余鹏 | Multifunctional square |
| CN101130327A (en) * | 2007-09-19 | 2008-02-27 | 扬州大学 | Multifunctional mathmatical ruler |
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| CN108674065A (en) * | 2018-06-21 | 2018-10-19 | 江西工业工程职业技术学院 | The multi-purpose measuring scale of artistic decoration design specialized |
| CN108674065B (en) * | 2018-06-21 | 2023-08-25 | 江西工业工程职业技术学院 | Multipurpose measuring ruler special for artistic decoration design |
| CN111421985A (en) * | 2020-04-24 | 2020-07-17 | 商丘师范学院 | Tool for economic management drawing |
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Application publication date: 20160203 |
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