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Pocket sundial Dollond box brass with a diameter of 1.77'', a replica model of 1885. The cap inscription: Dollond LONDON POCKET SUNDIAL, 1885.
The inner part of the cover hides a world clock with movable shield that allows the orientation of the time differences in selected areas of the world. On the back of the box thickly embossed information on how to use the sundial. Shield the clock - Roman numerals, gnomon. For a quick little Compasito facilitate proper positioning of the clock.