NAVIGATION
Ruby sphere; diameter(mm), 1.19 (3/64 in); grade 25
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Ruby sphere; diameter(mm), 1.59 (1/16in); grade 25
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Ruby sphere; diameter(mm), 2.38 (3/38in); grade 25
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Ruby sphere; diameter(mm), 4.76 (3/16in); grade 25
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Ruby sphere; diameter(mm), 0.25; grade 25
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Ruby sphere; diameter(mm), 0.75; grade 25
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