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simultaneously amplifying it), as in a micrometer.
* Linearly moving an object a precise distance, as in a leadscrew of a lathe.

In all of these applications, the screw thread has two main functions:
* Convert rotary motion into linear motion.
* Prevent linear motion without the corresponding rotation.

Design

Gender

Every matched pair of threads, external and internal, can be described as male and female. Generally

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