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This exquisite instrument features the compass set in a gimbal with the two rings divided into 360 degrees
featuring a compass and cotton shadow line
Complete with booklet explaining its use and historical contest
explaining its use and historical context
Hand crafted of brass and wood with green paint finish accented with a brass clasp and hinge
Hartmann's Astrolabe - Key Ring This exquisite instrument features thePlanispheric (Catholic or European) astrolabe, set for 50 North latitude. Stars and other features updated to make it functional. This beautiful astrolabe is based on the work of Georg Hartman a sixteenth century astronomer from Nuremberg, Germany. The astrolabe is an astronomical calculating device used from ancient times into the eighteenth century. It's used by measuring the height of a star using the back of the instrument, and knowing the
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