NAVIGATION
Bronze gauze, alloy 220, 20 mesh woven from 0.41mm (0.016in) in dia wire
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Bronze gauze, alloy 220, 150 mesh woven from 0.066mm (0.0026in) in dia wire
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Nickel Copper foil, alloy 400, 0.51mm (0.02in) thick
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Brass foil, alloy 260, 0.41mm (0.016in) thick
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Stainless Steel disc, 102mm (4.0in) dia x 12.7mm (0.5in) thick, Type 304
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Brass spheres, alloy 260, 6.35mm (0.25in) dia
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