A "Porters" type floating sundial with label inscribed The Magnetic Time Indicator and Compass, in walnut case - 2¼in wide; a floating papercard compass, with folding gnomon and brass hour ring, the lid with part perpetual calendar; a paper card sundial with inserted compass in case; and a model of a sundial on pillar

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A "Porters" type floating sundial with label inscribed The Magnetic Time Indicator and Compass, in walnut case - 2¼in wide; a floating papercard compass, with folding gnomon and brass hour ring, the lid with part perpetual calendar; a paper card sundial with inserted compass in case; and a model of a sundial on pillar

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