['318', '(', '412', ')', 'CHAPTER', 'XIV', 'THE', 'TESTING', 'OF', 'WOOLS', ',', 'TOPS', 'AND', 'YARNS', ',', 'AND', 'EXPERIMENTAL', 'TESTING', 'APPARATUS', 'It', 'is', 'now', 'generally', 'recognized', 'that', 'even', 'the', 'smallest', 'firm', 'should', 'have', 'a', 'small', 'testing', 'laboratory—that', 'all', 'materials', 'should', 'be', 'compared', 'with', 'their', 'standards—', 'and', 'that', 'the', 'productions', 'of', 'any', 'and', 'every', 'firm', 'should', 'go', 'forth', 'accredited', 'under', 'reasonably', 'guaranteed', 'con-', 'ditions.', 'One', 'mistake', 'has', 'often', 'cost', 'a', 'firm', 'many', 'times', 'over', 'the', 'cost', 'of', 'the', 'equipment', 'and', 'maintenance', 'of', 'a', 'suitable', 'laboratory.', 'The', 'following', 'equipment', 'is', 'essential', ':', '-', '1.', 'Microscope', 'with', '2', 'in.', ',', '1', 'in.', ',', 'and', '3', 'in.', 'objectives', ',', 'with', 'substage', 'and', 'eyepiece', 'micrometer.', '2.', 'Experimental', 'equipment', 'for', 'scouring', ',', 'carbon-', 'izing', ',', 'blueing', ',', 'bleaching', ',', 'etc.', '3.', 'Hand carder', '(', 'or', 'small', 'experimental', 'set', 'of', 'draw-', 'ing', 'machines', 'followed', 'by', 'knitting machine', ')', 'for', 'testing', 'colour', 'blends', ',', 'etc.', "Lovibond's Tintometer", 'would', 'of', 'course', 'be', 'an', 'admirable', 'addition', 'for', 'a', 'coloured', 'yarn', 'spinner.', '4.', 'Conditioning oven', '5.', 'Velvet-covered', 'boards', 'for', 'top', 'drawing.', '6.', 'Single thread strength-tester', 'to', 'grasp', 'threads', 'with', 'little', 'or', 'no', 'space', 'in', 'between', 'and', 'up', 'to', 'a', 'short', 'weaving', 'length', ',', 'say', '18', 'in.', '318']
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