Abacus of Calculation
Wondrous Item, Uncommon
Aura: Minor Divination
This device is a simple wooden frame, about 8 by 10 inches. Several heavy wires are strung across the frame, parallel to one another. On each wire are 10 wooden balls. When mathematical formulas involving numbers are spoken near the object, the balls shift about and the answer is spoken aloud by a disembodied voice.
One of many items from my conversion of the old 2e Encyclopedia Magica into 5e-compatible content with my Artifacts of Antiquity collection. For a master list of all items currently converted, please check out this page.
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