Scale calibration method and drawing ruler capable of adjusting any proportion

Abstract

The invention provides a scale calibration method and a drawing ruler capable of adjusting any proportion. A plurality of scale lines are drawn on a proportion map based on the principle of similar triangles; a proportion scale is marked on the 0 scale line, and the proportion scale is 1.0 and serves as a standard proportion; the plurality of scale lines are arranged at equal intervals at any proportion; the distance between the adjacent scale lines is enlarged or reduced from the standard proportion position to the two ends according to the numerical value of the proportion scale; and the ratio of the distance between the two adjacent scale lines at the scale of any proportion to the distance at the standard proportion is the numerical value of the scale of the corresponding proportion; The continuous proportion transformation of the drawing ruler is achieved, the calculation link is omitted when a drawing is drawn, lines are drawn directly according to original size data, and the drawing efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of scales, in particular to a scale calibration method and a drawing scale with adjustable arbitrary scale. Background technique [0002] Most of the traditional measuring rulers are measuring rulers with a millimeter scale, and the scale scale cannot be adjusted. When drawing various design drawings, drawing to scale is a widely used method. When drawing some graphics with a strong three-dimensional effect such as axonometric drawings or bird's-eye views, the drawing angle makes the sides of the graphics and the original length show various proportions of expansion and contraction. It is estimated that the drawing will affect the accuracy and intuitiveness of the graphics. However, if the length of each line is calculated proportionally, the more complex the graphics and the larger the specifications, the greater the amount of calculation, which is time-consuming and labor-intensive. At present, the commo...

AI Technical Summary

Problems solved by technology

When drawing some graphics with strong three-dimensional sense such as axonometric diagrams or bird's-eye views, the drawing angle makes the sides of the graphics and the original length show various proportions of expansion and contraction. It is estimated that the drawing will affect the accuracy and intuitiveness of the graphics.

However, if each length is calculated proportionally, the more complex the graph, the larger the specification, the greater the amount of calculation, and it will take time and effort

At present, the commonly used methods for converting a plan view into a bird's-eye view are the grid method and the glass sheet copy method. The former takes too much time to draw the grid, and the latter requires more materials.

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