NAVIGATION
Platinum Iridium foil, 0.15mm (0.006in) thick, 99.9% (metals basis)
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C-276 foil, 0.2mm (0.008in) thick
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Magnesium Aluminum Zinc foil, 1mm (0.04in) thick
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Steel shot, non-spherical, 0.25mm (0.0098in) dia
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Steel shot, non-spherical, 0.5mm (0.02in) dia
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Steel shot, non-spherical, 1mm (0.039in) dia
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