NAVIGATION
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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Brass gauze, alloy 260, 80 mesh woven from 0.14mm (0.0055in) dia wire; Cu:Zn; 70:30 wt%
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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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Brass foil, alloy 260, 0.64mm (0.025in) thick
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