TitleNapier - Bones
PublisherUniversity of Edinburgh
Dimensions30 x 20 in.
DescriptionBlack text on yellow background.
Describes how to use Napier's Bones. Contains a drawing of Pepy with a quote from his diary..
Shows an example of how to multiply two numbers using the device.
In his book "Rabdologiae libri duo:. Napier described three methods for abbreviating the
multiplication of large nujbers "for those who prefer to work with natural numbers. .....
EXAMPLE To multiply 365 x 293