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Sliding miter square

A vertical ruler and mutually perpendicular technology, applied in the field of drawing tools, can solve problems such as difficult operation, and achieve the effect of parallel lines quickly

Inactive Publication Date: 2010-11-10
李国兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, it is common among primary and middle school students to use a triangular ruler as the height on the bottom edge of a geometric figure, as a vertical line of a straight line, and to use a combination of a triangular ruler and a straightedge to draw parallel lines. However, in actual teaching, students use the two It is difficult to grasp the height of a right-angled side, and it is difficult to draw parallel lines with a combination of a triangle ruler and a ruler. These difficulties have a lot to do with the defects of drawing tools

Method used

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Embodiment Construction

[0009] exist figure 1 Among them, the straight rod with rail (2) has a slide rail (4), the straight rod with groove (1) has a slide groove (3), and the slide rail (4) is embedded in the slide groove (3) to fit and connect, The slide rail (4) can move up and down in the chute (3), and the straight rod with rail (2) and the straight rod with groove (1) are always kept vertical, and the straight rod with rail (2) and the straight rod with groove (1) ) each have a side in the same plane, so that when drawing, the straight bar with track (2) and the straight bar with groove (1) can be close to the surface. When drawing parallel lines, put the sliding vertical ruler on the paper, move the straight bar with track (2) up and down and draw many parallel straight lines with a pen close to the edge of the straight bar with track (2); When making a vertical line, you can put figure 1 The position of the sliding vertical ruler is rotated 90°, the edge of the straight rod with groove (1) ...

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Abstract

The invention discloses a sliding miter square and relates to a drawing tool of student stationery, which brings convenience for students to draw height lines, vertical lines and parallel lines. The sliding miter square comprises two straight poles with sliding grooves and a sliding rails which are matched with each other; the sliding rail on one straight pole is embedded in the sliding groove of the other straight pole and is in matching connection with the sliding groove of the other straight pole, and moreover, the sliding rail can move in the sliding groove. In sliding process, the two straight poles are vertical to each other all the time, and the two straight poles are provided with scale lines and marks for showing length. When in use, one straight pole is fixed relatively, and the other straight pole is moved to a specific position, and thus, height lines, vertical lines and parallel lines can be drawn conveniently. Used for drawing, the sliding miter square is more convenient than a set square and a straight scale.

Description

technical field [0001] The invention relates to a drawing tool in student stationery, in particular to a sliding vertical ruler that can help students conveniently draw heights, vertical lines, and parallel lines. Background technique [0002] At present, it is common among primary and middle school students to use a triangular ruler as the height on the bottom edge of a geometric figure, as a vertical line of a straight line, and to use a combination of a triangular ruler and a straightedge to draw parallel lines. However, in actual teaching, students use the two It is difficult to grasp the height of a right-angled side, and it is difficult to draw parallel lines with a combination of a triangle ruler and a ruler. These difficulties have a lot to do with the defects of drawing tools. Contents of the invention [0003] In order to bring convenience to students in making heights, vertical lines and parallel lines of geometric figures, and to bring convenience to drafting d...

Claims

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Application Information

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IPC IPC(8): B43L7/14G01B5/02
Inventor 李国兴
Owner 李国兴
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