CN2485153Y - Three-purpose ruler - Google Patents

Abstract

The utility model relates to a three-use ruler which is characterized in that: one end of a long strip ruler is made to be a circular arc shape, the scales of a protractor are serially arranged on the positive position of the long side without scales of the ruler and the opposite position of the circular arc from the inosculating position of the circular arc and the long side which is provided with scales of the ruler and along the circular arc, and the other end of the ruler is provided with circle center positioning through holes or circle center positioning needles. Insides of the through holes are provided with a row of radius through holes with equal distances. The long side of the long strip ruler can measure the length. The protractor can measure the angle, circles or circular arcs with different radials can be drawn by the cooperation of the circle center positioning through holes and the radius through holes, thereby making the ruler has three functions of measuring lengths as well as angles and drawing circles.

Description

Three-in-one ruler

Three-in-one ruler of the present utility model belongs to a kind of study and drafting instrument.

The general only tool of existing widely used ruler is measured the simple function of length.

The purpose of this utility model is that a kind of three-in-one ruler of measuring length, angle, the three kinds of functions in picture garden that integrates will be provided.

The purpose of this utility model is achieved in that the end with the strip ruler is made into circular arc, the anastomosis on the graduated long limit beginning on circular arc and ruler, do not have the long limit of scale and the opposite position of circular arc makes the scale of protractor continuously via circular arc to ruler, and make the signable at least angular range that goes out 0 °-170 ° of this scale.Have center of circle positioning through hole at the ruler other end, at the inboard equidistant delegation's radius through hole that has of this through hole.At this moment, length can be measured in the graduated long limit of strip ruler, and protractor can be measured angle, center of circle positioning through hole and the two cooperation of radius through hole can the draw circle or the circular arc of different radii.

Owing to carry out such scheme, just can make a ruler have the length of measuring, angle, three kinds of functions of picture circle.

Concrete structure of the present utility model is provided by following drawings and Examples.

Fig. 1 is three-in-one ruler Facad structure schematic diagram

Fig. 2 is three-in-one ruler structure schematic diagram

Fig. 3 is a three-in-one ruler center of circle pilot pin structural representation

Embodiment 1: shown in Fig. 1～3, be carved with on the long limit of strip ruler and measure scale, the right-hand member of chi body 1 is a circular arc, the anastomosis on the graduated long limit beginning on circular arc and ruler, do not have the long limit of scale and the opposite position of circular arc makes the scale of protractor 5 continuously via circular arc to ruler, and make the signable at least angular range that goes out 0 °-170 ° of this scale.The other end at chi body 1 has center of circle positioning through hole 3, the equidistant delegation's radius through hole 2 that has on the chi body 1 of this through hole inboard, and radius through hole 2 is a bellmouth, its aperture at the ruler back side is big, and is little in the aperture in ruler front.The long limit of no scale is made into the wave shape on the ruler

When measuring length, use the scale on the long limit of strip ruler to get final product.

When measuring angle, will aim at the summit at the angle of desiring to measure with the 90 ° of corresponding angulation points 4 of scale on the protractor 5, angulation is put the ruler at 4 places and is grown one side that the limit is pressed in the angle, can measure angle from the scale of protractor 5.

When drawing circle or circular arc, with the center of circle that positioning through hole 3 centerings in the center of circle are set, in this through hole, insert a sharp-pointed spicule, on the other hand by fixed this spicule, another hand-held pencils etc. insert nib in the radius through hole 2 by the radius of setting, and can draw around center of circle positioning through hole 3 and justify or circular arc.

Utilizing when drawing wave has the limit of wave to get final product on the ruler.

Embodiment 2: cancellation center of circle positioning through hole 3, at positioning through hole 3 places, the former center of circle of the graduated one side of ruler, an if taper center of circle pilot pin 6, when drawing circle or circular arc, the center of circle with the setting of center of circle pilot pin 6 centerings, another hand-held pencils etc. insert nib in the radius through hole 2 by the radius of setting, and can draw around center of circle pilot pin 6 and justify or circular arc.

Claims (3)

1, a kind of three-in-one ruler, it is characterized in that: an end of strip ruler is a circular arc, the anastomosis on the graduated long limit beginning on circular arc and ruler, the opposite position that does not have the long limit of scale and a circular arc to ruler via circular arc makes the scale of protractor continuously, have center of circle positioning through hole at the ruler other end, at the inboard equidistant delegation's radius through hole that has of this through hole.

2, three-in-one ruler as claimed in claim 1 is characterized in that: be provided with center of circle pilot pin in the graduated one side of the ruler other end.

3, three-in-one ruler as claimed in claim 1 is characterized in that: the long limit that ruler does not have scale is that wave is linear.

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