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Source Description
This is a publication about a comparator machine for the inspection of screw threads, with illustrations by Russell W. Porter.
Scholar Source Context
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Hartness Screw Thread Comparator for Accurate and Rapid Screw Gaging
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7077469
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document
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Hartness Screw Thread Comparator for Accurate and Rapid Screw Gaging
description
This is a publication about a comparator machine for the inspection of screw threads, with illustrations by Russell W. Porter.
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Russell W. Porter Papers
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