Multifunctional radius-adjustable compasses with scales
A multi-function, scale technology, applied in circular curve plotters, printing, writing utensils, etc., can solve the problems of unable to meet the needs of engineering, single function of compasses, inconvenient radius adjustment, etc., to achieve a wide range of applications, accurate adjustment , the effect of easy adjustment of the radius
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[0015] In order to further explain the technical means and functions adopted by the present invention to achieve the predetermined purpose, the specific implementation methods, structures, features and functions proposed according to the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0016] Such as figure 1 As shown, a multi-functional adjustable diameter band scale compass includes a first scale positioning bolt 1, a second scale positioning bolt 11, a pen 2, a pen holder 3, a radius rod 4, a fixed tube 7, and a center pin 8; 2 is connected with the radius rod 4 through the pen holder 3 and the first scale positioning bolt 1; the center fixing needle 8 is connected with the radius rod 4 through the fixing tube 7, and the second scale positioning bolt 11 is also arranged on the fixing tube 7.
[0017] Such as figure 2 As shown, the upper side of the radius rod 4 is a plane with a length scale...
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