♊ Gemini — shoulders and arms
Third sign / paired upper limbs
Gemini is assigned to the paired shoulders, arms, and by extension the hands in common Zodiac Man summaries. The two-sided correspondence is collapsed to one midline anchor so the twelve signs remain one ordered set; it is not a claim that the limbs meet at the midline.
Point 3 of 12 in Zodiac Man — Melothesia (Homo signorum)
Cross-tradition overlaps
Sources
Zodiac man (homo signorum) diagram, Wellcome Collection M0017629 (primary_canonical)
Fifteenth-century Zodiac Man diagram assigning zodiac signs to descending bodily regions from head toward feet.
Sophie Page, Astrology in Medieval Manuscripts (scholarly_modern)
Scholarly history of medieval astrological manuscript diagrams and their medical context.