Knowledge Base:  

Knowledge Base : millimeters
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Size Chart
Gauge English Fraction (approximate) English Inches True Metric GwS Glass Metric (+-0.2mm) 18 3/64" 0.039" 1.02 mm 1mm 16 0.051" 1.3 mm 1.2-1.4mm 14 1/16" 0.063" 1.6 mm 1.5 mm 12 0.082" 2.06 mm 2.