12-28-2021, 11:23 AM
If you really want to use base 16, get a 4:1. All the 5:2 abacus are too large and old formatted. Slow to use.
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Best abacus to buy
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Best abacus to buy - by sachiek - 12-28-2021, 10:40 AM
RE: Best abacus to buy - by ttchrist69 - 12-28-2021, 11:21 AM
RE: Best abacus to buy - by Kevin - 12-28-2021, 11:23 AM
RE: Best abacus to buy - by curved_time - 12-28-2021, 11:25 AM
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