Hair COMPASSES are so contrived inside, by a small adjusting screw to one of the legs, as to take an extent to a hair's breadth.
Hair COMPASSES
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sub_entry · 128 chars · lineage ↗ · page image at NLS ↗
Hair COMPASSES are so contrived inside, by a small adjusting screw to one of the legs, as to take an extent to a hair's breadth.