JPH0331594Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to improvements in transparent rulers mainly made of plastic, such as straight rulers, triangular rulers, and protractors.

Hitherto, a transparent ruler whose entire lower surface has a finely roughened surface on which writing can be performed with a pencil, and whose edges are lined with graduation lines has been known, for example, from Japanese Utility Model Application Publication No. 55-52387.

However, the entire bottom surface of this structure is a finely rough surface that can be written on with a pencil, so when you place a ruler on it and look through the letters, symbols, ruled lines, etc. on the paper below, you need to use the same rough surface. Of course, it is not possible to do this clearly because it gets in the way.
The characters on the paper are determined by the grid scale provided on this.
It is impossible to measure the positional relationship of symbols, ruled lines, etc., and since there is no space for marking marks in the center of the scale lines, it is impossible to measure the positional relationship between symbols, ruled lines, etc. When marking a part of a scale line and using it as a reference point when marking or drawing lines to create a uniform table or column, use this mark as a scale line. As a result, the distance between the corresponding mark and the same mark on the edge of the ruler becomes wider, leading to errors in determining the positional relationship between the two. There were problems such as errors easily occurring in the above-mentioned marking and line drawing work.

This invention has a grid line arranged on the edge of the transparent ruler body with a space for marking marks near the center, and a band shape that allows writing with a pencil on the underside of the ruler body only at the part where the scale line is arranged. These problems are solved by providing a transparent ruler that is characterized by having a finely roughened surface and having square scales at regular intervals in areas other than the scale line arrangement area. This is what I am trying to do.

In the illustrated embodiment, line portions 3 and 1 having a length of 2 mm are formed on the lower surface of one side portion 2 and one end side portion 2' of a straight line ruler body 1 made of a transparent acrylic resin material.
1 mm interval 4 and 1 mm length line portion 5, and 1 cm unit scale 7 formed in the same way as the other side portion 8 and the other end side portion 8'. Solid parallel line scales 9, 9' at 2 mm intervals are provided on the bottom surface, and line portions 10 with a length of 1 mm and lines 1 with a spacing of 1 mm are placed on the entire bottom surface except for the entire outer periphery.
5 mm grid scale lines 14 that match the scale lines 6 and 7 of each unit, which are alternately arranged dotted lines 12 and solid lines 13 continued in step 1, are printed respectively, and the entire outside of the above on the linear ruler body 1 is printed. The lower surface of the peripheral part and 1
A step of providing a transparent layer 15 by silk printing with transparent ink on the lower surface of a point on a perpendicular line passing through points every 10 cm of the scale line 7 in cm units, and pressing the surface of the transparent layer 15 so that the pressure surface is a rough surface. A fine rough surface 16 on which writing can be written with a pencil is provided by applying pressure with a body (not shown), and 18 in the figure indicates scale lines 6 in 1 mm increments and scale lines 6 in 1 cm increments. 19 is an auxiliary scale, 20 is a dimension display character, and 21 is a narrow metal piece.

As mentioned above, the present invention arranges scale lines on the edge of the transparent ruler body, and forms a fine rough surface on the bottom surface of the ruler body only at the part where the scale lines are arranged, and allows writing with a pencil. Since grid scales are provided at regular intervals in areas other than the grid lines, this rough surface can be used to write marks on the ruler body, and using these marks as a reference, uniform tables and columns can be printed on many sheets of paper. Of course, it is possible to easily perform work such as marking marks and distinguishing lines for making scale lines, but in particular, in this invention, a space for marking marks is provided near the center of this scale line. By writing the above-mentioned mark in the same place, there is an advantage that the mark can be placed close to the edge of the ruler and the above-mentioned marking and line-drawing work can be reliably done using this mark. In addition, in the present invention, since the rough surface is provided only along the scale line, the remaining part of the ruler body maintains complete transparency, so that it is possible to see through the same part. This allows characters, codes, ruled lines, etc. on the paper below to be clearly seen, and in addition, in the present invention, grid scales are provided at regular intervals in areas other than the above-mentioned scale line arrangement area. Therefore, it is possible to reliably measure the mutual positional relationship of the above-mentioned characters, codes, ruled lines, etc., and the present invention has the effect that the above-mentioned problems can be satisfactorily solved. It is something that plays.

[Brief explanation of drawings]

The figures show an embodiment of the transparent ruler of the present invention, in which FIG. 1 is a partially omitted plan view showing the whole, and FIG. 2 is a sectional view taken along line A--A in FIG. 1. 1... Straight ruler main body, 2... One side part,
2'... One end portion, 3... Line part, 4... Spacing,
5...Line part, 6...Graduation line in 1mm units, 7...1
Graduation line in cm, 8...Other side part, 8'...
Other end portion, 9, 9'...parallel line scale, 10...
... Line part, 11 ... Interval, 12 ... Dotted line, 13 ...
Solid line, 14...Graphic scale line, 15...Transparent layer, 1
6...Matsu surface, 18...Blank space for marking, 1
9...Auxiliary scale, 20...Dimension display characters, 21...
...A narrow piece of metal.

Claims (1)

[Scope of utility model registration request] On the edge of the transparent ruler body, scale lines are arranged near the center with a space for marking marks, and only in the area where the scale lines are arranged, there is a fine band-shaped strip that can be written on the underside of the ruler body with a pencil. 1. A transparent ruler having a rough surface and having square scales at regular intervals in areas other than the scale line array area.