Description: Vintage 27 Column Abacus Soroban Calculating Tool ~ 1/5 Beads ~ Wood & Metal Approx 15.25" x 2.5" The Abacus (or Soroban as it is called in Japan) is an ancient mathematical instrument used for calculation. The Abacus is one of the world's first real calculating tools – and early forms of an Abacus are nearly 2500 years old. The word Abacus is derived from the Greek "Abax" meaning counting board; original types of Abacus were stone slates with dust covering them and a stylus used for marking numbers. Later this evolved into a slate with groves where rocks or other counters would be placed to mark numbers. Later it finally evolved into a framed device with beads sliding along bamboo rods. There are detailed instructions on how to use the abacus/soroban at the Slide Rule Museum (dot)com, with an Abacus Handbook pdf. FAST SHIP--goes to PO next biz day!
Price: 11.77 USD
Location: Albion, Indiana
End Time: 2024-11-18T00:34:59.000Z
Shipping Cost: 5.93 USD
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All returns accepted: ReturnsNotAccepted
Country/Region of Manufacture: Unknown
