CN200963984Y - Compasses ruler - Google Patents

Abstract

The utility model relates to a study supply, in particular to a compass-ruler which can be used both as a compass and a ruler. The compass-ruler comprises a straightedge characterized in that a slide-way is arranged on transverse central place of the straightedge; one end of the slide-way is provided with a small hole into which the pen point can inserted and the other end of the slide-way is provided with a needle which can slide on the slide-way; the zero graduation of the straightedge aligns with the small hole. The utility model is normally used as a ruler and when it is used as a compass, the needle point slides on the slide-way. The needle point is fixed according to the radius of the circle and the pen point is inserted into the small hole. A circle can be drawn when rotate the pen point. The utility model can be used to measure and draw a circle and has the advantages of small occupy area and being convenient to use.

Description

The compasses chi

(1) technical field under

The utility model relates to a kind of learning tool, but the compasses chi of particularly a kind of double as ruler and compasses.

(2) background technology

As everyone knows, ruler and compasses all are that the student reaches engineering staff's necessary tool in the process that design is drawn in the process of study, at present ruler, compasses are placed apart, take bigger space, particularly compasses relatively take up room, and a pin prong of compasses, one pin pencil-lead, pencil-lead is inconvenient to cut.

(3) summary of the invention

The utility model provides the compasses chi of a kind of ruler and compasses integrated design in order to remedy the deficiencies in the prior art.

The utility model is achieved by the following technical solution:

A kind of compasses chi comprises a ruler, and its special character is: the lateral center position of described ruler has a slideway, and an end of slideway is written insertable aperture, and the other end is provided with a prong that can slide on slideway.

Compasses chi of the present utility model, it further improves and is: 0 scale of described ruler is concordant with aperture.

The utility model uses as ruler at ordinary times, when using as compasses, prong is slided on slideway, according to the fixing prong of drawn radius of a circle, nib is inserted in the aperture rotated then, the circle of the required radius that can draw.

The utility model promptly can be used for measuring, and can be used as compasses again and comes the picture circle, has the advantage little, easy to use that takes up room.

(4) description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Accompanying drawing is a structural representation of the present utility model.

Among the figure, 1 ruler, 2 slideways, 3 apertures, 4 prongs.

(5) specific embodiment

Accompanying drawing is a kind of specific embodiment of the present utility model.This embodiment comprises a ruler 1, and the lateral center position of ruler 1 has a slideway 2, and an end of slideway 2 is written insertable aperture 3, and the other end is provided with a prong 4 that can slide on slideway 2; 0 scale of ruler 1 is concordant with aperture 3.When using as compasses, prong 4 is slided on slideway 2, according to the fixing prong 4 of drawn radius of a circle, then nib is inserted rotation in the aperture 3, the circle of the required radius that can draw.

Claims (2)

1. compasses chi, comprise a ruler (1), it is characterized in that: the lateral center position of described ruler (1) has a slideway (2), and an end of slideway (2) is a written insertable aperture (3), and the other end is provided with one can go up the prong (4) that slides at slideway (2).

2. compasses chi according to claim 1 is characterized in that: 0 scale of described ruler (1) is concordant with aperture (3).

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