Giovanni Dondi dell’Orologio’s astrarium had — one on the front showing the 24-hour equal hours and planetary positions, and one on the back showing the ecclesiastical calendar and lunar cycles. The additional seven-sided planetary section contained indicators, not separate time-telling faces.
The Masterpiece of Medieval Engineering: How Many Faces Did Giovanni Dondi’s Astrarium Have?
Giovanni Dondi dell’Orologio’s astrarium had — one on the front showing the 24-hour equal hours and planetary positions, and one on the back showing the ecclesiastical calendar and lunar cycles. The additional seven-sided planetary section contained indicators, not separate time-telling faces.
The Masterpiece of Medieval Engineering: How Many Faces Did Giovanni Dondi’s Astrarium Have?
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