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G-shaped angle gauge

A protractor and angle measuring technology, applied in the field of protractors, can solve the problems of difficult reading, difficult edge measurement, etc., and achieve the effects of easy operation, solving difficult reading, and highlighting humanization.

Inactive Publication Date: 2011-03-30
魏树军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a G-shaped protractor to solve the technical problems that the traditional protractor is difficult to measure the angle with a shorter side and difficult to read

Method used

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Embodiment Construction

[0013] Below in conjunction with accompanying drawing, the present invention will be further described:

[0014] from figure 1 It can be seen from the figure that its shape is similar to the uppercase English letter G. It is mainly composed of a pointer 1 and a G-shaped angle plate 2. The G-shaped angle plate is composed of a semi-circle 3 and a straight bar 4. The semi-circle 3 The inner circle is marked with a circle of data, figure 1 The middle shadow part is hollow, and one end of the straight bar 4 is connected with the semicircular ring 3, and the upper edge of the straight bar 4 is a 0° scale line. One end of the pointer 1 is connected to the center of the G-shaped protractor, and the other end is inserted into the hollow part 5 inside the semicircular ring 3 . When measuring an angle, first align the center of the protractor with the apex of the angle, then align the 0° scale line on the straight bar with one side of the angle to be measured, and then move pointer 1 ...

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Abstract

The invention provides a G-shaped angle gauge, which solves the technical problem that the traditional angle gauge is not easy to measure an angle with a short edge and is not easy to read. The G-shaped angle gauge mainly consists of a pointer 1 and a G-shaped angle measuring board 2, wherein the G-shaped angle measuring board consists of a semicircular ring 3 and a straight bar 4; seen from the back, the shape of the G-shaped angle measuring board is similar to a capital English letter G; a circle of data is marked in the semicircular ring 3, and the semicircular ring 3 is hollow; and one end of the straight bar 4 is connected with the semicircular ring, and the upper edge of the straight bar 4 is provided with a 0-degree scale mark. One end of the pointer 1 is connected with the center of the G-shaped angle gauge, and the other end of the pointer 1 is inserted into the hollow part inside the semicircular ring 3 of the G-shaped angle measuring board. The G-shaped angle gauge is more convenient to measure the angle and easier to read.

Description

technical field [0001] The invention relates to a protractor, in particular to a G-shaped protractor suitable for primary and middle school students. Background technique [0002] At present, there are many excellent design schemes for protractors. Most of the protractors used by students are closed semicircular shapes, and are marked with two circles of data and two 0° scale lines. But there are still deficiencies, it is difficult for students to measure the angle of the shorter side, and for some students who are not familiar with the protractor, it is easy to make reading errors. Contents of the invention [0003] The purpose of the present invention is to provide a G-shaped protractor to solve the technical problems that traditional protractors are difficult to measure angles with shorter sides and difficult to read. [0004] The present invention is achieved in this way: the G-shaped protractor is mainly composed of a pointer and a G-shaped protractor, and the G-shap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/24
Inventor 魏树军
Owner 魏树军