La calotte astrologique de Chevroches

Three Gallo-Roman bronze disks with astral inscriptions

“…19 Together with the other metal artifacts was found a coin hoard that dates the deposit to around or after the 340s CE, while a paleographical dating to the end of the third century has been offered for the Greek letter forms inscribed on the disk. 20 The disk is circular in outline, diameter approximately 6.45 cm and thickness 0.5 mm, not flat but effectively a circular segment of a sphere of diameter about 9 to 10 cm so that, lying flat, its center is approximately 1.3 cm higher than its periphery. 21 (Hence publications on it have preferred to use the term calotte, "cap.")…”

“…20 The disk is circular in outline, diameter approximately 6.45 cm and thickness 0.5 mm, not flat but effectively a circular segment of a sphere of diameter about 9 to 10 cm so that, lying flat, its center is approximately 1.3 cm higher than its periphery. 21 (Hence publications on it have preferred to use the term calotte, "cap.") The center is perforated by a circular hole, diameter approximately 5 mm.…”

“…23 Additionally, Patrice Cauderlier has proposed that the disk could have been an aid in composing a horoscope, though I have to confess I do not understand his instructions for using it in this way. 24 To arrive at an understanding of what the Chevroches disk was, I will begin with another Gallo-Roman object that has no obvious connection with it. In 1997 the Archäologisches Museum Frankfurt acquired from a private collection a remarkable bronze outflow clepsydra, now inv.…”

The Chevroches zodiacal cap and its Burgundy relations

“…), was in fact a particularly rare "scientific item". An initial analysis of this enigmatic piece is provided by Devevey et al (2006).…”

Alexandria in the ‘Corpus of Ptolemaic inscriptions’

“… Noble and de Solla Price 1968: 345-355;Efstratios, Manimanis and Mantarakis 2006. 36 Devevey et al 2006;Devevey 2009. 37 A. Tselikas, pers.…”