To multiply numbers the bones were placed side by side and the appropriate products read off. Glaisher described how to use Napier's bones in an article he wrote for Encyclopaedia Britannica and this description is quoted in . Napier's bones are also described in, and .
Upang paramihin ang mga numero ng buto ay inilagay tabi-tabi at ang nararapat na produkto read off. Glaisher inilarawan kung paano gamitin ang Napier's bones sa isang article he wrote for ensiklopedya Britannica at ito ay quoted sa paglalarawan. Napier's bones din sa mga inilarawan sa, at.