CN104417194A - Protractor capable of conveniently determining angles - Google Patents
Protractor capable of conveniently determining angles Download PDFInfo
- Publication number
- CN104417194A CN104417194A CN201310410182.5A CN201310410182A CN104417194A CN 104417194 A CN104417194 A CN 104417194A CN 201310410182 A CN201310410182 A CN 201310410182A CN 104417194 A CN104417194 A CN 104417194A
- Authority
- CN
- China
- Prior art keywords
- protractor
- angle
- plectane
- determining angles
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/56—Gauges for measuring angles or tapers, e.g. conical calipers
- G01B3/563—Protractors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention provides a protractor capable of conveniently determining angles. According to the protractor, the center of an upper semicircular plate of the protractor and the center of a lower semicircular plate of the protractor are movably connected together through a hinge shaft. During use, a required angle can be determined from a gap portion through the cross adjustment of the upper and lower semicircular plates; due to a protractor structure that two 180-degree structures are combined, a proper angle is easier to adjust.
Description
Technical field
The present invention relates to a kind of protractor, specifically a kind of protractor conveniently determining angle.
Background technology
Protractor is measuring and calculating and the specific purpose tool determining angle, and traditional protractor is a semicircle plate, can accurately be calculated by angular marking and mark 180
0the angle of scope, but traditional protractor is when calculating use, and determine angle with pen by sign, this traditional mode neither handled easily, directly affects measuring and calculating speed again.
Summary of the invention
The invention provides a kind of protractor conveniently determining angle, required angle can be indicated easily and efficiently.
The present invention includes first plectane and second plectane of protractor, the technical scheme adopted is: first plectane of described protractor and the center of second plectane are movably connected by hinge.
Beneficial effect of the present invention is: connect combination by protractor being adopted two semicircular body manners, during use, only two semicircular body need being regulated mutually, can directly determining required unspecified angle by breach again from being marked with aligning, speed is fast, regulate easy to use.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Shown in Fig. 1: first plectane 1 of protractor and the center of second plectane 2 are movably connected by hinge 3.
Claims (1)
1. conveniently determine a protractor for angle, comprise first plectane (1) and second plectane (2) of protractor, it is characterized in that: first plectane (1) of described protractor and the center of second plectane (2) are movably connected by hinge (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310410182.5A CN104417194A (en) | 2013-09-11 | 2013-09-11 | Protractor capable of conveniently determining angles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310410182.5A CN104417194A (en) | 2013-09-11 | 2013-09-11 | Protractor capable of conveniently determining angles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104417194A true CN104417194A (en) | 2015-03-18 |
Family
ID=52967750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310410182.5A Pending CN104417194A (en) | 2013-09-11 | 2013-09-11 | Protractor capable of conveniently determining angles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104417194A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111873673A (en) * | 2020-07-20 | 2020-11-03 | 山东理工职业学院 | Mathematical modeling teaching aid |
-
2013
- 2013-09-11 CN CN201310410182.5A patent/CN104417194A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111873673A (en) * | 2020-07-20 | 2020-11-03 | 山东理工职业学院 | Mathematical modeling teaching aid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |