Information on the ancient Roman abacus including what it was, how it was used, comparisons with other abaci around the world, and its impact on Roman daily life and that of the present day.
Maths class, Roman style - Aquincum Museum
Roman abacus - Wikipedia
Roman abacus hi-res stock photography and images - Alamy
THE ROMAN ORDERS OF ARCHITECTURE EXPLAINED
Roman Abacus (Illustration) - World History Encyclopedia
Abacus. /Nancient Roman Abacus. Line Engraving. Poster Print by (18 x 24)
Durability, Power, and Imposing Public Edifices of Roman Architecture
Roman abacus hi-res stock photography and images - Alamy
Roman Hand Abacus
Roman History Site and Discussion Forum
Roman Counting Boards. Chronicles of Computation — The Early…, by Danilo Poccia, Chronicles of Computation
Roman Triumph - World History Encyclopedia
Roman hand abacus « IMPERIUM ROMANUM
Outline of ancient Rome - Wikipedia
Pax: War and Peace in Rome's Golden Age by Tom Holland review — blood and circuses in Rome