CN201979934U - Convenient compass - Google Patents

Abstract

The utility model relates to a convenient compass, which belongs to a study article and comprises legs, a locking pin and a pencil, wherein the locking pin is arranged at the bottom end of one leg; the pencil is arranged at the bottom end of the other leg; and the locking pin and the pencil are respectively vertical to the horizontal plane. The convenient compass is characterized in that a pin shaft is arranged above the locking pin and is located on the vertical center line of the locking pin; the lower end of a transparent dividing rule is hinged onto the pin shaft; and the leg with the pencil is provided with a pencil point mark. When the convenient compass is used, as long as the dividing rule is rotated to be vertical to the locking pin around the pin shaft, the required radius is adjusted through the pencil point mark, and then a circle can start to be drawn.

Description

A kind of Convenient compasses

Technical field

The utility model relates to a kind of study article, specifically a kind of Convenient compasses.

Background technology

Use the compasses divider calipers to decide the bowlder of radius, must measure out earlier radius with a yardstick and draw, it is more loaded down with trivial details to operate, also cumbersome.

The utility model content

The purpose of this utility model is to provide a kind of Convenient compasses, when using this Convenient compasses, can measure the radius of a circle that will draw very easily, and is convenient and swift.

The technical scheme in the invention for solving the technical problem is: a kind of Convenient compasses, comprise supporting leg, be arranged on one on the supporting leg bottom locking pin and be arranged on pencil on the another supporting leg bottom, described locking pin and pencil are all perpendicular to horizontal plane, it is characterized in that, above the locking pin and be positioned at and be provided with a bearing pin on the locking pin vertical center line, the lower end of a transparent scale chi is hinged on the described bearing pin; On the supporting leg at pencil place, be provided with the nib mark.

The beneficial effects of the utility model are: can draw easily when using it to draw and formulate the circle of radius, and very easy to use.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Among the figure: 1 supporting leg, 2 locking pins, 3 rules, 4 pencils, 5 nib marks.

The specific embodiment

As shown in Figure 1.A kind of Convenient compasses, comprise supporting leg 1, be arranged on one on the supporting leg bottom locking pin 2 and be arranged on pencil 4 on the another supporting leg bottom, described locking pin and pencil are all perpendicular to horizontal plane.

Above the locking pin 2 and be positioned at and be provided with a bearing pin on the locking pin vertical center line, the lower end of a transparent scale chi 3 is hinged on the described bearing pin; On the supporting leg at pencil place, be provided with nib mark 5.

Only need during use rule 3 is rotated to and locking pin 2 vertical angles around bearing pin, adjust required radius, just can begin picture and justify by nib mark 5.

Claims (1)

1. Convenient compasses, comprise supporting leg, be arranged on one on the supporting leg bottom locking pin and be arranged on pencil on the another supporting leg bottom, described locking pin and pencil are all perpendicular to horizontal plane, it is characterized in that, above the locking pin and be positioned at and be provided with a bearing pin on the locking pin vertical center line, the lower end of a transparent scale chi is hinged on the described bearing pin; On the supporting leg at pencil place, be provided with the nib mark.

Images