NAVIGATION
Brass spheres, alloy 260, 6.35mm (0.25in) dia
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Bronze gauze, alloy 220, 40 mesh woven from 0.25mm (0.01in) in dia wire
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Nickel Copper foil, alloy 400, 0.81mm (0.032in) thick
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Aluminum foil, alloy 6061, 2.0mm (0.08in) thick
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Brass foil, alloy 260, 0.51mm (0.02in) thick
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Brass plate alloy 260, 6.35mm (0.25in) thick
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