CN2659700Y - Multifunctional ruler - Google Patents

Abstract

The utility model provides a multifunctional ruler on which a protractor is connected, and a rubber button is inserted, as well as a rubber snap ring is wrapped. A circle or a circular arc can be constructed with the small needle on the rubber button as the centre of a circle, and with the length from the rubber snap ring to the centre of the circle as the semidiameter; an angle can be constructed by rotating the protractor along a pin. The utility model has the advantages of multipurpose utensil, convenient map making, easy operation, and time saving.

Description

Multi-functional ruler

Affiliated technical field

The utility model relates to the multi-functional ruler that can draw straight line, circle or circular arc, angle in the study article field.

Background technology

Existing ruler can only be drawn the figure of straight line and band straight line, if also need re-use compasses and protractor when drawing circle or circular arc, angle, and unusual trouble, time-consuming.

Summary of the invention

Be convenient drawing, the utility model provides a kind of multi-functional ruler, can have the function at picture straight line, circle or circular arc and angle simultaneously.

The utility model comprises rubber button, rubber latch closure, ruler, pin, protractor, have elongated slot on the ruler, be connected with protractor by pin, and be inserted with the rubber button, be with the rubber latch closure, during use, pin the rubber button as the center of circle with hand, the rubber latch closure changes radius along moving in the elongated slot, penholder advances the aperture that rubber ring buckles and drives circle and the circular arc that ruler rotates the various radiuses that can draw, protractor rotates the angle that can draw different angles along pin, to realize drawing simultaneously the purpose at straight line, circle or circular arc and angle.

The utility model is compared with general ruler, the many usefulness of a tool, and drawing is convenient, and easy operating is saved time.

Description of drawings

Accompanying drawing is the utility model structural representation.

The specific embodiment

The utility model comprises rubber button 1, rubber latch closure 2, ruler 3, pin 4, protractor 5, one elongated slot is arranged in the middle of the ruler 3, respectively there is an aperture at two ends, be respectively applied for to insert rubber button 1 and sell 4 and connect protractor 5, little pin is arranged at rubber button 1 bottom, pins and can do the center of circle, and rubber latch closure 2 is enclosed within on the ruler 3, can move along ruler 3, have an aperture to be used for inserting stroke circle and circular arc on it.During use, pin rubber button 1 and do the center of circle with needle point with hand, move rubber latch closure 2 along elongated slot and change radiuses, penholder advances it on aperture and moves along the center of circle to draw and justify and circular arc, is that center amount of spin hornwork 5 can be drawn the angle with pin 4.

Claims (1)

1. A kind of multi-functional ruler comprises ruler (3), it is characterized in that having on the ruler (3) elongated slot and is connected with protractor (5) by pin (4), and be inserted with rubber button (1), is with rubber latch closure (2).

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