Armillary sphere, 1st century A.D.
Soprintendenza Speciale per i Beni Archeologici di Napoli e Pompei, inv. 62525, 62464, 63718

In the centre of the fresco we see an armillary sphere, introduced by Eudoxus both as a teaching aid and for observing the sky. It is surrounded by personifications of the seasons. Spring, which must have been on the underside of the sphere, is missing.