CN201471973U - Semi-circle instrument with compass functions - Google Patents

Semi-circle instrument with compass functions Download PDF

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Publication number
CN201471973U
CN201471973U CN2009203052089U CN200920305208U CN201471973U CN 201471973 U CN201471973 U CN 201471973U CN 2009203052089 U CN2009203052089 U CN 2009203052089U CN 200920305208 U CN200920305208 U CN 200920305208U CN 201471973 U CN201471973 U CN 201471973U
Authority
CN
China
Prior art keywords
graphometer
circle
ruler
semi
instrument
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.)
Expired - Fee Related
Application number
CN2009203052089U
Other languages
Chinese (zh)
Inventor
马方琪
Original Assignee
马方琪
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 马方琪 filed Critical 马方琪
Priority to CN2009203052089U priority Critical patent/CN201471973U/en
Application granted granted Critical
Publication of CN201471973U publication Critical patent/CN201471973U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a semi-circle instrument with compass functions, which comprises a semi-circle instrument, wherein a flat ruler is fixed on the semi-circle instrument through utilizing the circle center as a supporting point, one end of the flat ruler is led to be fixed on the circle center, thereby the flat ruler can rotate around the circle center, the other end of the flat ruler is led to align to the outer edge of the semi-circle instrument, and a chalk clip is arranged on one end of the flat ruler which is aligned to the outer edge of the semi-circle instrument. The semi-circle instrument not only has the basic function of the semi-circle instrument, but also can be used for drawing straight lines and any angles, and can be used as a compass, and achieves multi functions of a tool.

Description

The double graphometer of doing the compasses function
Technical field
The utility model belongs to the teaching aid technical field, is specifically related to a kind of double graphometer of doing the compasses function.
Background technology
In the present educational aid, need to prepare a plurality of instruments in drawing, during during measuring angle or picture angle, requirement hornwork, ruler, compasses and set square etc. carry and deposit inconvenience.
Summary of the invention
The purpose of this utility model provides a kind of double graphometer of doing the compasses function, can realize two functions by an instrument.
The technical scheme that the utility model adopted is, a kind of double graphometer of doing the compasses function, comprise a graphometer, circle centre position at graphometer is that fulcrum is fixed a ruler, make an end of this ruler be fixed on circle centre position and can rotate around the center of circle, the other end of this ruler is alignd with the outer edge of graphometer, and be provided with the chalk folder at an end place of the ruler that aligns with the graphometer outer edge.
Characteristics of the present utility model also are,
Be carved with graduation mark on the straight flange of graphometer.
The ruler upper edge is provided with groove longitudinally, this chalk folder can move along this groove.
Graphometer of the present utility model carries out simple modifications on the structure of existing graphometer, it can be taken measurement of an angle and can make compasses and use.
Description of drawings
Fig. 1 is the structural representation of the utility model graphometer.
Among the figure, 1. chalk presss from both sides, 2. ruler, the 3. center of circle, 4. graphometer, 5. graduation mark.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
The graphometer structure that the utility model is double does the compasses function as shown in Figure 1, on the architecture basics of existing graphometer 4, make simple modifications, at 3 places, the center of circle of graphometer 4 is that fulcrum is fixed a ruler 2, make an end of this ruler 2 be fixed on 3 places, the center of circle and can be around the center of circle 3 rotate, the other end of this ruler 2 is alignd with the outer edge of graphometer 4, and be provided with chalk folder 1 at an end place of the ruler 2 that aligns with graphometer 4 outer edges, ruler 2 upper edges are provided with groove longitudinally, this chalk folder 1 can move along this groove, is carved with graduation mark 5 on the straight flange of graphometer 4.
Use makes, and except the basic function that can use graphometer, owing on the straight line of graphometer graduation mark 5 is arranged, can be used for the picture straight line; Also can draw straight line along ruler 2; And, be a limit of angle with the straight flange of graphometer, be another limit of angle with ruler 2, according to the number of degrees on the graphometer, can draw corresponding angle; Can also be according to the size on the ruler 2, mobile chalk folder 1 arrives the position that needs, and loads onto chalk on chalk folder 1, can draw the circle of different radii.Realized a multi-functional purpose of instrument.

Claims (3)

1. double graphometer of doing the compasses function, comprise a graphometer (4), it is characterized in that, locate to fix a ruler (2) in the center of circle (3) of graphometer (4) for fulcrum, make the end of this ruler (2) be fixed on that the center of circle (3) is located and can (3) rotate around the center of circle, the other end of this ruler (2) is alignd with the outer edge of graphometer (4), and be provided with chalk folder (1) at an end place of the ruler (2) that aligns with graphometer (4) outer edge.
2. according to the described double graphometer of doing the compasses function of claim 1, it is characterized in that, be carved with graduation mark (5) on the straight flange of described graphometer (4).
3. according to claim 1 or the 2 described double graphometers of doing the compasses function, it is characterized in that described ruler (2) upper edge is provided with groove longitudinally, this chalk folder (1) can move along this groove.
CN2009203052089U 2009-06-27 2009-06-27 Semi-circle instrument with compass functions Expired - Fee Related CN201471973U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009203052089U CN201471973U (en) 2009-06-27 2009-06-27 Semi-circle instrument with compass functions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009203052089U CN201471973U (en) 2009-06-27 2009-06-27 Semi-circle instrument with compass functions

Publications (1)

Publication Number Publication Date
CN201471973U true CN201471973U (en) 2010-05-19

Family

ID=42408218

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009203052089U Expired - Fee Related CN201471973U (en) 2009-06-27 2009-06-27 Semi-circle instrument with compass functions

Country Status (1)

Country Link
CN (1) CN201471973U (en)

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100519

Termination date: 20100627