related topic, also from ggg:
The Antikythera Mechanism:
Physical and Intellectual Salvage from the 1st Century B.C.
USNA Eleventh Naval History Symposium ^ | 1995 | Rob S. Rice
http://www.freerepublic.com/focus/f-chat/1191651/posts
So did these people who constructed sky globes really believe the earth was flat?