NAVIGATION
Brass plate alloy 260, 6.35mm (0.25in) thick
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Stainless Steel disc, 152mm (6.0in) dia x 12.7mm (0.5in) thick, Type 304
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Brass spheres, alloy 260, 12.7mm (0.5in) dia
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Bronze gauze, alloy 220, 100 mesh woven from 0.11mm (0.0045in) in dia wire
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Aluminum foil, alloy 6061, 1.0mm (0.04in) thick
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Aluminum plate, alloy 6061, 2.3mm (0.09in) thick
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