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Sundial Postcard

Sundial Postcard

$ 6.00

This postcard is not just a sundial, but can also be used as a compass and without incorporating it. Is very simple, match the time on your watch with the shadow of the string in the sundial postcard (always discounting the progress schedule for each country) and the postcard will be automatically be oriented north-south. It also includes a lunar volvelle on the front, for calculating the time at night by the shadow of the moon.


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