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Nut-screw differential mechanism 1

Thread on the orange screw is M5x0.8 (right hand). External thread on the green knob is M8x1.25 (right hand).

The orange screw moves 1.25 - 0.8 = 0.45 mm during 1 rev. of the knob.

It is possible to reduce this difference by choosing appropriate leads.

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