Small Abacus purchased in Dezful Bazaar, Iran |
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Suanpan Abacus Paperweight |
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Lotus Flower Suanpan modified for the addition of Yards, Feet, Inches, Eighths, Thirty-Secondths and One Hundred and Twenty-Eighths, made in China, modified in Britain |
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Lotus Flower Suanpan modified for the addition of Days, Hours, Minutes and Seconds, made in China, modified in Britain |
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Lotus Flower Suanpan modified for the addition of Degrees, Minutes, Seconds and Decimal Fractions of a Second, made in China, modified in Britain |
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Lotus Flower Suanpan modified for the addition of Long Tons, Hundredweights, Stones, Pounds,Ounces and Drachms. Ounces and Drachms are base 16 and the remaining four rods after this are for base 16 arithmetic, made in China, modified in Britain |
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Lotus Flower Suanpan with 11 Rods made in The People's Republic of China |
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Suanpan with 13 Rods |
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Suanpan with 9 Rods packaged with Jesse Dilson's book entitled "Abacus" |
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Red Lion Suanpan with 11 Rods made in China |
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Decorative Suanpan |
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Functional Child's Suanpan, Made in China by the Galaxy Stationery Co, Ltd. |
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Soroban with 21 Rods |
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Narasaki Soroban 27 Rods |
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Sharp Elsimate EL-428 |
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Sharp Elsimate EL-8048 |
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Soroban with reset button 13 Rods |
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Soroban 9 Rods |
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Soroban 11 Rods |
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Cranmer Abacus for the Blind. The felt surface underneath the beads prevents them from moving accidentally. |
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Soroban Style Abacus made using K'Nex |
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Roman Abacus made using K'Nex |
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Duplex Abacus, Decimal on one side and Binary on the other. The Binary Abacus shows the sum 101(5) Times 1101(13) equals 1000001(65) made using K'Nex |
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Pocket Decimal Abacus with 7 rods made using K'Nex |
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Japanese Soroban with five beads on Earth and one in Heaven, of a type superceded in the 1930's by those with four beads on Earth and one in Heaven shown above |
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Soroban with five beads on Earth, one in Heaven and 27 Rows. |
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Childs Abacus in a pencil box. The dividers on the upper abacus have been added by me to allow temporary modification for different bases |
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Pencil Box Abacus. |
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Abacus Style Calendar showing November 3rd 2010 |
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Schioty with a quarter Rouble Rod, the line of four beads four rows from the bottom and a rod at the bottom for counting the Den'gi (1/2 Copeck) and the Polushka (1/4 Copeck). The Rouble is the currency of Russia with one Rouble equal to 100 Copecks |
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Schioty, 17cm x 11cm. Donated by Alla Shuvalova, Novocheboksarsk, Russia |
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Schioty |
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Schioty |
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Small but Colourful Schioty from Lithuania. |
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Decimal Schioty |
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Child's Schioty |
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This Abacus was obtained from Hong kong. It is very similar in design to the decimal schioty but with nine beads to a line instead of ten. It does for the Schioty that which the Soroban does for the Suanpan. |
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Homemade Table Abacus based on the Exchequer Table in Strasbourg Museum. The sum is VII(7) Times DCXXXII(632) Equals MMMMCCCCXXIIII(4424) or MMMMCDXXIV |