Generic Classic Abacus, Soroban Calculator, 10.5 Inches, 17 Column  (Multicolor)

Classic Abacus, Soroban Calculator, 10.5 Inches, 17 Column Professional tool; the soroban or counting tray is a classical form of the abacus; the abacus is a calculating tool that was used for centuries before the adoption of the written modern numeral system; it is still widely used by merchants, traders and clerks in certain parts of the world|Educational tool; in addition to being a professional tool, the soroban or abacus is also an educational tool; the abacus is widely used in teaching children counting and mathematics; people who become proficient in the use of the abacus almost automatically become adept at mental calculation; instructions are not included|Standard design; this soroban abacus has a plastic frame; its classical, standard design allows for its ease of use as a professional and educational tool|Specifications; this is a 17 digit professional soroban abacus that measures 10.5 x 2.5 x 0.75 inches (26.5 x 6 x 1.5 centimeters)|30 day return policy; we want you to be satisfied with your purchase; you are backed by our 30 day no questions asked money back return policy so you can buy with confidence The abacus, also called a counting frame, is a calculating tool that was in use centuries before the adoption of the written modern numeral system and is still widely useed by merchants, traders and clerks in Asia, Africa, and elsewhere. The abacus is also widely used in teaching counting and mathematics. This standard set is perfect for practical use as well as teaching children