Last Updated
：2025/11/21
jig borer
（ plural ）
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A type of machine tool invented during the World War I era to make possible the quick-yet-very-precise location of hole centers.
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jig borer
The machinist used the jig borer to locate and drill the component's mounting holes with micron-level precision.
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The machinist used the jig borer to locate and drill the component's mounting holes with micron-level precision.
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