A vernier octant ebony and brass by Spencer Browning & Rust, London with inlaid ivory scale divided on Ramsdens Engine calibrated 2° - 0° - 100° (old damages, pieces loose/missing) in stepped keystone case -- 14½in. (37cm.) in length

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A vernier octant ebony and brass by Spencer Browning & Rust, London with inlaid ivory scale divided on Ramsdens Engine calibrated 2° - 0° - 100° (old damages, pieces loose/missing) in stepped keystone case -- 14½in. (37cm.) in length
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