Category:Napier's bones

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Napier's bones 
Napier's calculating tables.JPG
Wikipedia
Instance of mechanical calculator
Named after
Authority control
Wikidata
Blue pencil.svg

Subcategories

This category has the following 2 subcategories, out of 2 total.

Media in category "Napier's bones"

The following 40 files are in this category, out of 40 total.