Triangle instrument which is provided with aluminium-chromium alloy step slot corner pointer and is adjustable in the same plane
An aluminum-chromium alloy and corner pointer technology, which is applied in the field of triangular devices, can solve the problems of not being able to better cultivate students' association, analogy, observation and hands-on ability, increasing the difficulty of work for educators, and three rods on the same plane, etc., to achieve Light weight, simple structure, easy to carry effect
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[0038] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments:
[0039] figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , Figure 7 , Figure 8 , 13 and Figure 14Middle: The aluminum-chromium alloy stepped groove corner pointer is adjustable in the same plane as the demonstration triangle, including three first movable plates 10, second movable plates 20 and third movable plates 30 with the same structure and size, each movable plate consists of a ruler plate part and the turntable part; the first movable plate 10 is composed of the first rule board part 19 and the first turntable part 18, the second movable board 20 is composed of the second ruler board part 29 and the second turntable part 28, the third The movable plate 30 is composed of a third ruler part 39 and a third turntable part 38 ; the step rail 14 on the first ruler part 19 and the step groove 41 on the third turn...
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