CN201511711U

CN201511711U - Multi-purpose protractor

Info

Publication number: CN201511711U
Application number: CN2009202401222U
Authority: CN
Inventors: 孙帮海
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-10-23
Filing date: 2009-10-23
Publication date: 2010-06-23
Anticipated expiration: 2019-10-23

Abstract

The utility model relates to a multi-purpose protractor, which belongs to the field of the mapping tool. The multi-purpose protractor comprises a circular edge (3), and is characterized in that the angle of the circular edge (3) is 270 degrees. The center of circle of the circular edge (3) is the foot of a horizontal right-angled side (1) and a vertical right-angled (2), the circular surface with the center of circle as the center is marked with equal angles, and the horizontal right-angled side (1) and the vertical right-angled (2) are respectively marked with length scales. The utility model integrates the functions of the protractor, the ruler and the set square.

Description

Multiple use angle protractor

Technical field

Multiple use angle protractor belongs to the surveying and mapping tool field.Be specifically related to a kind of multiple use angle protractor.

Background technology

It is all more single that existing mathematics is measured the drawing instrument general utility functions, 180 ° of common plane protractors, set square and rulers need auxiliary mutually use just can finish some work in mapping or mathematical studying, will proceed in two phases in the angulation of protractor, picture angle, use comparatively inconvenience.Because instrument is numerous, and shape is various, gives to carry and also brought inconvenience simultaneously.

The utility model content

The technical problems to be solved in the utility model is: overcome the deficiencies in the prior art, a kind of multiple use angle protractor that integrates protractor, ruler, set square three function is provided.

The technical scheme that its technical problem that solves the utility model adopts is: this multiple use angle protractor, comprise the circular arc limit, it is characterized in that: the circular arc limit is 270 °, the center of circle, circular arc limit is the arm of angle and the vertically intersection point of the arm of angle anyhow, with the center of circle is that the center is marked with the five equilibrium angle at the arc surface subscript, and marking respectively on the arm of angle and the vertical arm of angle anyhow has the length scale.

The five equilibrium angle that marks on the arc surface is respectively so that the arm of angle and the vertical arm of angle are the starting point mark anyhow.

Anyhow the arm of angle is respectively to begin mark zero point with the center of circle with the length scale of vertical arm of angle subscript notes.

Compared with prior art, the beneficial effect that has of the present utility model is: can intuitive and convenient finish following function:

1, possess take measurement of an angle, line segment length and line segment fragmentation feature;

2, possess and easy mark in 0-360 ° arbitrarily angledly, particularly draw the right angle and can once finish;

3, in the mathematics coordinate system, finish fixed point, positioning function easily;

4, can mark equal or straight line that is parallel to each other that does not wait and the function of the limit of arbitrary line, line segment, changeable shape being done vertical line of arbitrarily angled distance in 0-360 ° easily;

5, right angled triangle and right angle quadrangle are made and can be required once to move and can finish according to the length of side as square, rectangular cartridge paper;

6,, also can succinctly draw according to angle for polygon.

Description of drawings

Fig. 1 is the utility model multiple use angle protractor structural front view schematic diagram.

Wherein: 1, the arm of angle 2, the vertically arm of angle 3, circular arc limit anyhow.

Fig. 1 is the most preferred embodiment of the utility model multiple use angle protractor, is described further below in conjunction with 1 pair of the utility model of accompanying drawing:

The specific embodiment

With reference to accompanying drawing 1: the circular arc limit 3 of the utility model multiple use angle protractor is 270 °, and the arm of angle 1 is perpendicular to the vertical arm of angle 2 anyhow.Anyhow the arm of angle 1 and the vertically arm of angle 20 ° and 270 ° of start lines each other.Anyhow the arm of angle 1 is with vertically the arm of angle 2 is vertical mutually, and intersection point O is measurement zero point or the origin of coordinates also is the center of circle on 270 ° of circular arc limits 3.With the center of circle is that the center is marked with the five equilibrium angle at the arc surface subscript, and scale is 0-270 °, and the five equilibrium angle of mark is respectively so that the arm of angle and the vertical arm of angle are twice mark of starting point anyhow.Anyhow on the arm of angle 1 and the vertical arm of angle 2 respectively mark length scale, unit are arranged be millimeter (mm) and centimetre (cm).Anyhow the length scale of mark can be respectively to begin mark zero point with the center of circle on the arm of angle 1 and the vertical arm of angle 2.Anyhow the arm of angle 1 and the vertical arm of angle 2 vertical mutually can be respectively as two limits of its form right angle, 270 ° of fan-shaped initial right-angle sides, mutually as the lagging half axle and the vertical semiaxis of abscissa in the coordinate system and ordinate.

Using method is as follows:

1, has functions such as the taking measurement of an angle of common 180 ° of protractors or common ruler, line segment length and line segment segmentation.

2, possess the easy function at any angle that marks in the 0-360 degree, particularly draw the right angle and can once finish.Using method is: the initial line that rises that draw angle is overlapped with the arm of angle 1 anyhow.Starting point overlaps with this utility model center of circle.Be rotated counterclockwise to required angle, the required angle of drawing gets final product.

3, in the mathematics coordinate system, finish fixed point, positioning function easily.Using method: this utility model is inserted coordinate system, and vertically the arm of angle 2 is measured numerical value perpendicular to abscissa, and the arm of angle 1 is measured numerical value perpendicular to abscissa anyhow.Then the position of the center of circle coordinate system of living in of this utility model is location point in the required coordinate system of solving, and the rest may be inferred uses.

4, can mark equal or straight line that is parallel to each other that does not wait and the function of the limit of arbitrary line, line segment, changeable shape being done vertical line of arbitrarily angled distance in the 0-360 degree easily.The technique of painting of parallel lines: can use the arm of angle anyhow 1 of this utility model to overlap with the required original line that draws parallel lines.Draw a vertical line along the vertical arm of angle 2.The vertical arm of angle 2 is overlapped with drawn vertical line.Moving up and down this utility model then can draw as requested apart from the parallel lines that do not wait or the position is different.The technique of painting of vertical line: make the vertical arm of angle 2 or anyhow the arm of angle 1 overlaps with the former limit of required picture vertical line on one side arbitrarily, then drawn straight line of another side and former initial line are crossing or non-intersect, then this line is the vertical line of the former initial line that draws of requiring.

5, right angled triangle and right angle quadrangle can (refer to the length of side) as requested as square, the making of rectangular cartridge paper and once move and can finish.The technique of painting of square or rectangular: can place this utility model on paper, along the arm of angle anyhow 1 and vertically the arm of angle 2 according to desired length draw rectangle or foursquare both sides.Rotate this utility model, make its center of circle relative with both sides intersection point with the square or rectangular that draws, according to graduation mark make this utility model the arm of angle anyhow 1, vertically the arm of angle 2 is vertical mutually with the tetragonal both sides of having drawn, draw and can finish.

6,, also can succinctly draw according to angle for polygon.Using method: the polygon technique of painting can move this utility model in order according to the given length of side, angle and can draw.

The above, it only is preferred embodiment of the present utility model, be not to be the restriction of the utility model being made other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of technical solutions of the utility model according to technical spirit of the present utility model.

Claims

1. multiple use angle protractor, comprise circular arc limit (3), it is characterized in that: circular arc limit (3) are 270 °, the center of circle, circular arc limit (3) is the arm of angle (1) and the vertically intersection point of the arm of angle (2) anyhow, with the center of circle is that the center is marked with the five equilibrium angle at the arc surface subscript, and marking respectively on the arm of angle (1) and the vertical arm of angle (2) anyhow has the length scale.

2. multiple use angle protractor according to claim 1 is characterized in that: the five equilibrium angle that marks on the arc surface is respectively so that the arm of angle (1) and the vertical arm of angle (2) are the starting point mark anyhow.

3. multiple use angle protractor according to claim 1 is characterized in that: the arm of angle (1) is respectively to begin mark zero point with the center of circle with the length scale that the vertical arm of angle (2) upward marks anyhow.