The length of the line can be selected according to different usage environments.
本作品版权归 大山里的放牛娃 所有，禁止匿名转载及个人使用，任何商业用途均需联系原作者。
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Where is intelligence
The line inserted in the U.S. gauge is very thick.
It's just a design drawing, not yet in mass production.
Is this just a mass production of design drawings?
Not bad