JP2919324B2 - Scale conversion ruler - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scale conversion ruler and, more particularly, to a scale conversion ruler capable of easily measuring the size of a drawing or the like enlarged or reduced by a copying machine in consideration of the scale.

[0002]

2. Description of the Related Art Most modern copying machines have enlargement and reduction functions. Therefore, if this function is used, a design drawing or the like drawn on a large sheet such as the JIS standard A0 or A1 plate can be easily reduced to the A3 size. Also, in Japan, two types of paper sizes called row A and row B are widespread. For this reason,
In order to unify the paper size of documents, for example, in many cases, B5 size documents are enlarged to A4 size, and A3 size drawings are reduced to B4 size.

[0003]

SUMMARY OF THE INVENTION Character information such as text is
Even if the image is enlarged or reduced by the copying operation, the readability of the character is changed, and there is almost no adverse effect of the copying. On the other hand, in the case of drawings, etc., the original drawing is drawn on a scale with no fractions, so to know the length on the drawing without numerical values, use the appropriate scale of a triangular scale to determine the length. Seeking directly. However, for example, when a drawing drawn in A2 size is reduced to A3 size, the scale after copying is further multiplied by 1 / √2 (= 0.71) in the drawing. For this reason, the reduced drawing is displayed at an odd scale not found on a triangle scale or the like. Therefore, when reading a numerical value from such a reduced drawing, the length on the drawing is first read using a scale, and the value is converted to a reduced scale using a calculator or the like to obtain the actual dimensions. In addition to the enlargement / reduction in the same row A or B, there are various scales that can be supported by the copying machine such as row A → row B, row B → row A, and the like. Therefore, in order to read the dimensions from each reduced or enlarged drawing, there is a problem that the scale conversion is complicated each time, and a calculation error is likely to occur.

Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art and to provide a scale conversion ruler which can directly read the dimensions of a drawing enlarged or reduced at a predetermined scale by a copying machine or the like. To provide.

[0005]

In order to achieve the above object, a first invention is to provide a rectangular frame shown on a light-transmitting ruler plate.
In the line, a reference line consisting of one of the diagonal lines of the square frame line,
Parallel to one side of the above-mentioned square frame line that divides the reference line into actual scales
A plurality of equally-spaced parallel dividing lines and actual scales of the reference line
Length of the ratio corresponding to the scale conversion magnification for the unit length of
Is a scale that is divided by the parallel dividing line
Thus, one end of the reference line coincides with one end of the reference line,
The other end is up to the square frame line
A plurality of tubes corresponding to the plurality of extended scale conversion magnifications
And a magnification indicating line .

According to a second aspect of the present invention, a plurality of magnetic bodies having the same shape are formed so that the magnetic poles on the adjacent facing surfaces have the same polarity.
The light-transmitting cylindrical container having a cross-sectional shape substantially equal to the cross-sectional shape of the magnetic body is accommodated in a space having a predetermined reference length, and the length of the space is a ratio corresponding to a predetermined scale conversion factor.
It is extended or shortened in the longitudinal direction from the reference length, and in this state, the separation distance of the magnetic bodies housed at equal intervals in the space is a scale graduation corresponding to the scale conversion magnification. Is what you do.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a scale conversion ruler according to the present invention will be described below with reference to the accompanying drawings.
FIG. 1 shows a scale conversion ruler 1 according to an embodiment of the present invention. This scale conversion ruler 1 is a plane shape ruler in which a plurality of magnification indicating lines indicating each scale are engraved on a flat plate made of synthetic resin having optical transparency. Hereinafter, the relationship among each magnification instruction line, reference line, and division line will be described. Note that, in this embodiment, lines and characters marked on the surface of the resin plate are engraved by pressing on the resin surface, and the engraved portions are colored by printing so that the lines can be clearly seen. Have been. As another display means, for example, predetermined lines and characters may be directly printed on the resin plate surface. Hereinafter, in the present specification, a line or a character attached to a ruler is expressed as "represented" regardless of a display means such as printing or engraving. In addition, although it is expressed as the surface, the surface,
It goes without saying that either of the back sides may be used. The term light-transmissive is transparent, that is, a state in which light is optically specularly transmitted through a ruler with high transmittance, and is not colorless and transparent,
It is possible to include the concept of colored, colored and transparent so that the transmittance is hardly reduced. A square frame 2 is shown on the surface of the scale conversion ruler 1. Further, a reference line 3 is indicated by a bold line as a diagonal line of the square frame 2. In the present embodiment, the reference line 3 is divided into ten equal lengths by nine equal dividing lines 4 which are displayed in the vertical direction of the square frame 2. The actual size scale 5 divided by the equal dividing line 4 corresponds to a scale for displaying the actual size before enlargement or reduction.

[0008] Below the reference line 3 in the rectangular frame 2, magnification instruction lines 10 corresponding to a plurality of reduction magnifications are shown. In the present embodiment, four types of magnification instruction lines 10 with a reduction ratio of 86% to 61% are shown from the lower left vertex 2a to the right side 2b of the rectangular frame 2. This magnification indicator line 1
0 means that the length of the part divided by 4 by the equal dividing line is the reference line 3
Has a length corresponding to the magnification. Accordingly, the reduced scale 5a is represented by a scale of a predetermined magnification with respect to the actual scale 5 of the reference line 3.

On the other hand, a magnification indicating line 10 corresponding to the magnification
Are shown above the reference line 3. In the present embodiment,
Four types of magnification instruction lines 10 from an enlargement ratio of 115% to 200% are shown from the lower left vertex 2a to the upper side 2c of the rectangular frame 2. Enlarged scale 5b corresponding to the magnification, as is apparent from the figure, a large length of one graduation relative to the actual size scale 5 of the reference line 3. Therefore, the number of displayed scales is small.

For convenience of use outside the square frame 2 of the scale conversion ruler 1, in addition to the magnification of each magnification instruction line 10, A
A magnification display 16 in consideration of the sheet sizes of the plate and the B plate is shown. Further, a small hole 7 penetrating the scale conversion ruler 1 is formed at the intersection of each magnification indicating line 10 and the equal dividing line 4. With the small holes 7, marking points can be easily plotted on paper. Further, in the reference line 3 and the scale designating line 10 of the scale conversion ruler 1 shown in FIG. 1, for the sake of simplification of the drawing, small scales between the large scales 5 separated by the equal dividing lines 4 and the display of designated numerical values are displayed. Is omitted.

When the scale conversion ruler 1 centering on the reduction ratio is required, a vertically long frame is set such that the reference line 3 has a large angle of 45 ° or more with respect to the base 2d of the square frame 2. Is preferred. Further, in the present embodiment, the equal dividing line 4 is represented by a straight line parallel to the vertical line of the square frame 2 . On the other hand , when the reference line 3 is divided by setting a straight line parallel to the horizontal line of the rectangular frame 2 as the equal dividing line 4, the positions of the magnification instruction lines 10 for enlargement and reduction may be replaced.

FIG. 2 shows a scale conversion ruler 1 in which a permanent magnet made of a plurality of magnet alloys is housed in a cylindrical container made of light-transmitting resin such that the magnetic poles of adjacent magnets have the same polarity.
Is shown. The magnet cursors 46 made of permanent magnets accommodated in a space of a predetermined length of the cylindrical container 45 are separated at equal intervals at a predetermined distance by a repulsive force between the magnetic poles of the adjacent magnet cursors 46. . This magnet cursor 46
The separation distance between them can be changed at a ratio corresponding to the scale conversion magnification and used as a scale. 2 (a), the slide cap 47 is located at the end of the cylindrical container 45. In this state, the scale interval is maintained at an interval corresponding to a magnification of 115%. From this state, the slide cap 47 is pushed into the cylindrical container 45 to shorten the accommodation space 49 of the magnet cursor 30 according to the magnification display 48 for positioning marked on the surface of the cylindrical container 45, and narrowing the distance, for example 2
As shown in (b), the scale can be easily reduced to the scale interval of 61%. On the other hand, slide cap 4
7 can be drawn out and the accommodation space 49 can be extended. As the sliding function of the slide cap 47, various methods such as a screw-in type capable of finely adjusting the sliding amount can be adopted. The cross-sectional shape of the cylindrical container 45 can be selected from a triangular shape and a quadrangular shape in addition to the semicircular shape shown in FIG. 2B, and the magnet cursor 46 housed inside has a shape adapted to the cross-sectional shape of the container. can do. Also, by changing the magnetic flux intensity of the magnet alloy to be used, the width of the change in the magnification and the reduction can be set as appropriate. Further, the magnet cursor 46 can be provided not only with a permanent magnet as a whole but also with a similar function by embedding a magnet in a part of the resin cursor.
In FIG. 2, a scale on a ruler is exemplarily set, and various values can be set on the scale according to the magnetic flux intensity of the magnetic material.

[0013]

As is apparent from the above description, according to the present invention, it is possible to easily measure the dimensions and the like of a drawing copied at a predetermined enlargement or reduction ratio by a copying machine or the like. To play.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a scale conversion ruler according to the first invention.

FIG. 2 is a plan view showing an embodiment of a scale conversion ruler according to the second invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Scale conversion ruler 2 Square frame 3 Reference line 4 Equal division line 10 Magnification indication line 45 Cylindrical container 46 Magnet cursor 47 Slide cap 49 Housing space

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G01B 3/00-3/10 B43L 7/10

Claims (2)

(57) [Claims] 1. Within a rectangular frame shown on a light-transmitting ruler plate
A reference line consisting of one of the diagonal lines of the square frame line, and the reference line
A plurality of parallel lines parallel to one side of the square
Equally spaced parallel dividing lines and the unit length of the actual scale of the reference line
The length of the ratio corresponding to the scale conversion magnification is
Make sure that the scales are separated by line dividing lines.
One end of the reference line coincides with one end of the reference line, and
The other end is extended to the square frame line at a predetermined inclination.
A plurality of magnification fingers corresponding to the plurality of types of scale conversion magnifications
A scale conversion ruler characterized by showing a marking line . 2. A light-transmitting cylindrical container having a cross-sectional shape substantially equal to a cross-sectional shape of a plurality of magnetic bodies of the same shape such that magnetic poles of adjacent magnetic surfaces have the same polarity. ,
It is accommodated in a space forming a predetermined reference length, and the length of the space is extended or shortened from the reference length at a ratio corresponding to a predetermined scale conversion magnification, and in this state, at equal intervals in the space. A scale conversion ruler, wherein a distance between the accommodated magnetic bodies is set to a scale corresponding to the scale conversion magnification.