CN202337138U - Compasses with graduated scale - Google Patents

Abstract

The utility model discloses a pair of compasses with a graduated scale. The pair of compasses comprises a compass needle leg, a compass pen leg, a graduated scale, a fixed shaft and an alignment point, wherein the alignment point is arranged on the compass needle leg, the graduated scale is arranged on the compass pen leg and is fixed on the compass pen leg through the fixed shaft, and each mark on the graduated scale indicates 3mm which is equivalent to 1cm-radius of a circle to be drawn. By the adoption of the pair of compasses, the compasses and the ruler are combined together, if a circle with the radius being 4cm needs to be drawn, the circle can be drawn by aligning the mark '4' on the graduated scale to the alignment point, and thus, the time for determining the radius by measuring the distance between the two legs by using another ruler is saved.

Description

The compasses of band rule

Technical field

The utility model relates to a kind of compasses with rule.

Background technology

Common compasses are being drawn bowlder, are to measure the distance between bipod to ruler with one earlier, confirm radius, begin the picture circle again, and very trouble like this seems.

Summary of the invention

The utility model technical problem to be solved is, overcomes the shortcoming that prior art exists, and a kind of compasses with rule are provided, and is simple in structure, reaches purpose easy to use.

In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of compasses with rule is characterized in that; Comprise rule divider pin, rule pen rule pin, rule, fixed axis and snap point; On rule divider pin, be provided with snap point, on rule pen rule pin, be provided with rule, rule is fixed on the rule pen rule pin through fixed axis; Each scale is 3mm on the rule, and 3mm equals picture radius of a circle 1cm.

The beneficial effect of the utility model is: compasses and ruler are combined; Like radius of need picture circle that is 4cm; Align with " snap point " with the scale on the rule " 4 "; Just can draw, measure the time that distance between bipod is confirmed radius with regard to having saved like this with another ruler.

Description of drawings

Fig. 1 is the compasses sketch map of band rule,

Fig. 2 is the compasses embodiment sketch map of band rule.

Among the figure:

1 rule divider pin, 2 rule pen rule pin

3 rules, 4 fixed axis

5 snap points

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further explain: the compasses of band rule; As shown in the figure, comprise rule divider pin, rule pen rule pin, rule, fixed axis and snap point, on rule divider pin, be provided with snap point; On rule pen rule pin, be provided with rule; Rule is fixed on the rule pen rule pin through fixed axis, and each scale is 3mm on the rule, and 3mm equals picture radius of a circle 1cm.

Adopt the utility model; Compasses and ruler are combined, and the circle as radius of need picture is 4cm aligns with " snap point " with the scale on the rule " 4 "; Just can draw, measure the time that distance between bipod is confirmed radius with regard to having saved like this with another ruler.

Claims (1)

1. compasses with rule; It is characterized in that, comprise rule divider pin, rule pen rule pin, rule, fixed axis and snap point, on rule divider pin, be provided with snap point; On rule pen rule pin, be provided with rule; Rule is fixed on the rule pen rule pin through fixed axis, and each scale is 3mm on the rule, and 3mm equals picture radius of a circle 1cm.

Images