NAVIGATION
Stainless Steel disc, 76mm (3.0in) dia x 12.7mm (0.5in) thick, Type 304
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Brass foil, alloy 260, 2.0mm (0.08in) thick
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Brass foil, alloy 260, 0.81mm (0.032in) thick
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Stainless Steel gauze, 500 mesh woven from 0.02mm (0.0009in) dia wire, Type 304
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Brass gauze, alloy 260, 20 mesh woven from 0.41mm (0.016in) dia wire
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Bronze gauze, alloy 220, 20 mesh woven from 0.41mm (0.016in) in dia wire
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