put the screws to
Did I screw up somewhere along the line?
Basically, it started with a screw up.
A steel cylinder (about the thickness of a goose-quill), which forms the micrometer screw, has two threads cut upon it, one-half being cut with a thread double the pitch of the other.
The amount of this pressure is regulated by the screw z'.
And again he twisted the screw with the stripped thread, and again it turned uselessly in the same place.
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