A multi-scale reading distance ruler

A scale and multi-scale technology, applied in the field of surveying and mapping engineering, can solve problems such as inconvenience in work, and achieve the effects of convenient use, accurate measurement and wide application range

Active Publication Date: 2017-11-28
WUXI MUNICIPAL DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this utility model is to solve the problem of inconvenient work caused by frequent replacement of the reading distance scale when using various drawings of different scales in the surveying and mapping work, and to provide a multi-scale reading distance scale with simple structure and compact design

Method used

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  • A multi-scale reading distance ruler
  • A multi-scale reading distance ruler
  • A multi-scale reading distance ruler

Examples

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Embodiment Construction

[0013] The utility model will be further described below in conjunction with the accompanying drawings.

[0014] Such as Figure 1-Figure 3 As shown, a multi-scale reading distance ruler includes a hollowed-out outer ruler 1 and a reading distance ruler 2. The reading distance ruler 2 is clamped inside the hollowed-out outer ruler 1. The hollowed-out outer ruler 1 has a square-edge structure. One end is provided with a hexagonal bayonet 3, the other end of the hollow outer ruler 1 is provided with a round hole 4, the bottom edge of the hollow outer ruler 1 is provided with a normal length scale, the reading distance ruler 2 is a regular hexagonal prism, and the reading distance ruler 2 Each side edge is respectively provided with scale reading distance scales of different ratios, and the scale scales on the six prismatic surfaces of the reading distance ruler 2 are respectively 1:100, 1:200, 1:300, 1:500, 1:1000, 1:2000, one end of the reading distance ruler 2 is provided wit...

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Abstract

The invention relates to a multi-proportion range reading scale which comprises a hollowed-out outer scale and a range reading scale, wherein the range reading scale is arranged in the hollowed-out outer scale in a clamped way, the hollowed-out outer scale is of a structure of the frustum of a square pyramid, a hexagonal bayonet is formed at one end of the hollowed-out outer scale, a circular hole is formed at the other end of the hollowed-out outer scale, normal length scales are formed on the bottom edge of the hollowed-out outer scale, the range reading scale is in hexagonal prism shape, proportional scale range reading scales with different proportions are respectively formed on each side edge surface of the range reading scale, a chuck is arranged at one end of the range reading scale, a connecting rod is arranged at the other end of the range reading scale, and one end of the connecting rod is connected with a connecting head. The multi-proportion range reading scale is simple in structure, compact in design, and convenient to use; since the hollowed-out outer scale is of a structure of the frustum of a square pyramid and is in plane contact with graph paper, measuring is more accurate; since normal scales are formed on the bottom edge of the hollowed-out outer scale, and the range reading scale is in hexagonal prism shape and has six different proportion scales, the application scope is wide; and since one end of the range reading scale is provided with the connecting rod and the connecting head, the range reading scale can rotate in the hollowed-out outer scale to find a proper proportion scale and then read, thus being convenient to use.

Description

technical field [0001] The utility model relates to a multi-proportion reading distance ruler, which belongs to the technical field of surveying and mapping engineering. Background technique [0002] With the rapid development of science and technology in the 21st century, electronization has been widely used in daily life. In surveying and mapping activities, various electronic instruments and equipment have replaced conventional surveying and mapping tools, but paper drawings cannot be completely replaced in surveying and mapping applications. A large number of drawings of various scales are often used in daily surveying and mapping work. However, due to the single scale of conventional reading distance scales, multiple reading distance scales of different scales are often prepared when used, which brings inconvenience to daily surveying and mapping work. Contents of the invention [0003] The purpose of the utility model is to solve the problem of inconvenient work caus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B43L13/00
CPCB43L13/00
Inventor 祝启祥张俊
Owner WUXI MUNICIPAL DESIGN INST
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