A 19th-Century brass surveying compass, the silvered dial signed Michael Rupp, New York., the edge-bar needle with jewelled cap, the horizontal scale divided in 4 quadrants (needle pivot damaged, glass missing), the shaped limb with level, cross-bubble, variation vernier fine adjustment, twin sights and universal ball socket staff mounting, in fitted mahogany case - 15¾in. (40cm.) wide. See illustration
A 19th-Century brass surveying compass, the silvered dial signed Michael Rupp, New York., the edge-bar needle with jewelled cap, the horizontal scale divided in 4 quadrants (needle pivot damaged, glass missing), the shaped limb with level, cross-bubble, variation vernier fine adjustment, twin sights and universal ball socket staff mounting, in fitted mahogany case - 15¾in. (40cm.) wide. See illustration
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