Napier's compasses
A compass and wire rope technology, which is applied in the field of multi-purpose compasses, can solve the problems of complicated procedures, errors, and can only draw ellipses, etc., and achieves the effect of being convenient to carry and high precision.
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[0026] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to make a clearer and clearer definition of the protection scope of the present invention.
[0027] See Figure 1 to Figure 10 , The embodiment of the present invention includes:
[0028] A multi-purpose compass, comprising: a telescopic adjustment mechanism and a pen holder fixing mechanism; the telescopic adjustment mechanism includes a rotation locking mechanism, a sliding focus adjustment mechanism and a cord locking mechanism; the sliding focus adjustment mechanism is slidably arranged at the The rotary locking mechanism; the cord locking mechanism is fixed on the rotary locking mechanism; the pen holder fixing mechanism is connected to the cord locking mechanism.
[0029] The rotary locking mechanism includes an ir...
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