A BRASS DRUM SEXTANT, SIGNED TROUGHTON & SIMMS, with telescope--3in. (7.6cm.) diam.; a mahogany cased pocket compass--2in. (5.1cm.) square; a late 18th century brass circumferentor in shaped case-- in. ( cm.) wide and a primitive brass nocturnal-- in.( cm.) diam.

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A BRASS DRUM SEXTANT, SIGNED TROUGHTON & SIMMS, with telescope--3in. (7.6cm.) diam.; a mahogany cased pocket compass--2in. (5.1cm.) square; a late 18th century brass circumferentor in shaped case-- in. ( cm.) wide and a primitive brass nocturnal-- in.( cm.) diam.

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